Alignment control of self-assembling Si quantum dots
Yuki Imai; Ryoya Tsuji; Katsunori Makihara; Noriyuki Taoka; Akio Ohta; Seiichi Miyazaki
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2023年08月

Layer transfer of ultrathin Ge crystal segregated on Al/Ge(111) structure
Keigo Matsushita; Akio Ohta; Shigehisa Shibayama; Tomoharu Tokunaga; Noriyuki Taoka; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2023年06月

Formation of ultra-thin NiGe film with single crystalline phase and smooth surface
Shunsuke Nishimura; Noriyuki Taoka; Akio Ohta; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2023年04月

Evaluation of chemical structure and Si segregation of Al/Si(111)
Taiki Sakai; Akio Ohta; Keigo Matsushita; Noriyuki Taoka; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2023年04月

Effects of Cl passivation on Al2O3/GaN interface properties
Taisei Nagai; Noriyuki Taoka; Akio Ohta; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2023年01月

Study on Electron Emission from Phosphorus d-Doped Si-QDs/Undoped Si-QDs Multiple-Stacked Structures
K. Makihara; T. Takemoto; S. Obayashi; A. Ohta; N. Taoka; S. Miyazaki
IEICE TRANSACTIONS on Electronics, 2022年10月, 査読有り

Magnetic-Field Dependent Electron Transport of Fe3Si Nanodots
J. Wu; K. Makihara; H. Zhang; H. Furuhata; N. Taoka; A. Ohta; S. Miyazaki
IEICE TRANSACTIONS on Electronics, 2022年10月, 査読有り

Impact of substrate heating during Al deposition and post annealing on surface morphology, Al crystallinity, and Ge segregation in Al/Ge(111) structure
Matsushita Keigo; Ohta Akio; Taoka Noriyuki; Hayashi Shohei; Makihara Katsunori; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022年07月01日

Characterization of electronic charged states of high density self-aligned Si-based quantum dots evaluated with AFM/Kelvin probe technique
Imai Yuki; Makihara Katsunori; Taoka Noriyuki; Ohta Akio; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022年06月01日

Study on silicidation reaction of Fe nanodots with SiH4
Furuhata Hiroshi; Makihara Katsunori; Shimura Yosuke; Fujimori Shuntaro; Imai Yuki; Ohta Akio; Taoka Noriyuki; Miyazaki Seiichi
APPLIED PHYSICS EXPRESS, 2022年05月01日

Crystal structure change in multilayer GeH flakes by hydrogen desorption under ultrahigh vacuum environments
Itoh Mai; Araidai Masaaki; Ohta Akio; Nakatsuka Osamu; Kurosawa Masashi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022年05月01日

Segregation control for ultrathin Ge layer in Al/Ge(111) system
Ohta Akio; Kobayashi Masato; Taoka Noriyuki; Ikeda Mistuhisa; Makihara Katsunori; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022年01月01日

Effect of substrate temperature on plasma-enhanced self-assembling formation of high-density FePt nanodots
Honda Shunsuke; Makihara Katsunori; Taoka Noriyuki; Furuhata Hiroshi; Ohta Akio; Oshima Daiki; Kato Takeshi; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022年01月01日

Correlation between structures and vibration properties of germanene grown by Ge segregation
Mizuno Shogo; Ohta Akio; Suzuki Toshiaki; Kageshima Hiroyuki; Yuhara Junji; Hibino Hiroki
APPLIED PHYSICS EXPRESS, 2021年12月01日

Single germanene phase formed by segregation through Al(111) thin films on Ge(111)
J. Yuhara; H. Muto; M. Araidai; M. Kobayashi; A. Ohta; S. Miyazaki; S. Takakura; M. Nakatake; G. L. Lay
2D Materials, 2021年10月, 査読有り

Epitaxial growth of massively parallel germanium nanoribbons by segregation through Ag(110) thin films on Ge(110)
Yuhara Junji; Shimazu Hiroki; Kobayashi Masato; Ohta Akio; Miyazaki Seiichi; Takakura Sho-ichi; Nakatake Masashi; Le Lay Guy
APPLIED SURFACE SCIENCE, 2021年06月01日, 査読有り

Surface flattening and Ge crystalline segregation of Ag/Ge structure by thermal anneal
Ohta Akio; Yamada Kenzo; Sugawa Hibiki; Taoka Noriyuki; Ikeda Mitsuhisa; Makihara Katsunori; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2021年05月01日, 査読有り
筆頭著者

Energy band diagram for SiO2/Si system as evaluated from UPS analysis under vacuum ultraviolet with variable incident photon energy
Ohta Akio; Imagawa Takuya; Taoka Noriyuki; Ikeda Mitsuhisa; Makihara Katsunori; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2021年01月01日
筆頭著者

Effect of B-doping on photoluminescence properties of Si quantum dots with Ge core
Makihara Katsunori; Fujimori Shuntaro; Ikeda Mitsuhisa; Ohta Akio; Miyazaki Seiichi
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2020年12月, 査読有り

Characterization of photoluminescence from Si quantum dots with B delta-doped Ge core
Maehara Takuya; Fujimori Shuntaro; Ikeda Mitsuhisa; Ohta Akio; Makihara Katsunori; Miyazaki Seiichi
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2020年11月15日, 査読有り

Hydrogen desorption from silicane and germanane crystals: Toward creation of free-standing monolayer silicene and germanene
Araidai Masaaki; Itoh Mai; Kurosawa Masashi; Ohta Akio; Shiraishi Kenji
JOURNAL OF APPLIED PHYSICS, 2020年09月28日

Electron Field Emission from Multiply-Stacked Si Quantum Dots Structures with Graphene Top-Electrode
T. Niibayashi; T. Takemoto; K. Makihara; A. Ohta; M. Ikeda; S. Miyazaki
Electrochemical Society (ECS) Transaction, 2020年09月, 査読有り

Characterization of Magnetic-Field Dependent Electron Transport of Fe3Si Nanodots by Using a Magnetic AFM Probe
J. Wu; H. Zhang; H. Furuhata; K. Makihara; M. Ikeda; A. Ohta; S. Miyazak
Electrochemical Society (ECS) Transaction, 2020年09月, 査読有り

Crystallization of Ge Thin Films on Sapphire(0001) by Thermal Annealing
H. Sugawa; A. Ohta; M. Kobayashi; N. Taoka; M. Ikeda; K. Makihara; S. Miyazaki
Electrochemical Society (ECS) Transaction, 2020年09月, 査読有り

Continuous Growth of Germanene and Stanene Lateral Heterostructures
Tsuyoshi Ogikubo; Hiroki Shimazu; Yuya Fujii; Koichi Ito; Akio Ohta; Masaaki Araidai; Masashi Kurosawa; Guy Le Lay; Junji Yuhara
ADVANCED MATERIALS INTERFACES, 2020年05月

Formation of ultrathin segregated-Ge crystal on Al/Ge(111) surface
Masato Kobayashi; Akio Ohta; Masashi Kurosawa; Masaaki Araidai; Noriyuki Taoka; Tomohiro Simizu; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2020年04月01日, 査読有り

Impact of surface pre-treatment on Pt-nanodot formation induced by remote H-2-plasma exposure
Fujimori Shuntaro; Makihara Katsunori; Ikeda Mitsuhisa; Ohta Akio; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2019年08月01日

Comparative study of photoluminescence properties obtained from SiO2/GaN and Al2O3/GaN structures
Takada Noriharu; Taoka Noriyuki; Ohta Akio; Yamamoto Taishi; Nguyen Xuan Truyen; Yamada Hisashi; Takahashi Tokio; Ikeda Mitsuhisa; Makihara Katsunori; Shimizu Mitsuaki; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2019年08月01日

Characterization of Electron Field Emission from Multiple-Stacking Si-Based Quantum Dots
Futamura Yuto; Makihara Katsunori; Ohta Akio; Ikeda Mitsuhisa; Miyazaki Seiichi
IEICE TRANSACTIONS ON ELECTRONICS, 2019年06月

Impact of remote plasma oxidation of a GaN surface on photoluminescence properties
Takada Noriharu; Taoka Noriyuki; Yamamoto Taishi; Ohta Akio; Nguyen Xuan Truyen; Yamada Hisashi; Takahashi Tokio; Ikeda Mitsuhisa; Makihara Katsunori; Shimizu Mitsuaki; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2019年06月01日

Evaluation of the potential distribution in a multiple stacked Si quantum dots structure by hard X-ray photoelectron spectroscopy
Futamura Yuto; Nakashima Yuta; Ohta Akio; Ikeda Mitsuhisa; Makihara Katsunori; Miyazaki Seiichi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2019年02月

Characterization of electron charging and transport properties of Si-QDs with phosphorus doped Ge core
Nagai Ryo; Yamada Kentaro; Fujimori Shuntaro; Ikeda Mitsuhisa; Makihara Katsunori; Ohta Akio; Miyazaki Seiichi
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2018年12月

Local Structure of High Performance TiOxPassivating Layer Revealed by Electron Energy Loss Spectroscopy
T. Mochizuki; K. Gotoh; A. Ohta; Y. Kurokawa; S. Miyazaki; T. Yamamoto; N. Usami
2018 IEEE 7th WCPEC Proceeding, 2018年11月29日, 査読有り

Germanene Epitaxial Growth by Segregation through Ag(111) Thin Films on Ge(111)
Yuhara, Junji; Shimazu, Hiroki; Ito, Kouichi; Ohta, Akio; Araidai, Masaaki; Kurosawa, Masashi; Nakatake, Masashi; Le Lay, Guy
ACS NANO, 2018年11月

Activation mechanism of TiOx passivating layer on crystalline Si
Mochizuki, Takeya; Gotoh, Kazuhiro; Ohta, Akio; Ogura, Shohei; Kurokawa, Yasuyoshi; Miyazaki, Seiichi; Fukutani, Katsuyuki; Usami, Noritaka
APPLIED PHYSICS EXPRESS, 2018年10月

Total photoelectron yield spectroscopy of energy distribution of electronic states density at GaN surface and SiO2/GaN interface
Akio Ohta; Nguyen Xuan Truyen; Nobuyuki Fujimura; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年06月01日

Evaluation of resistive switching properties of Si-rich oxide embedded with Ti nanodots by applying constant voltage and current
Akio Ohta; Yusuke Kato; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年06月01日

Low-temperature formation of Ga-oxide/GaN interface with remote oxygen plasma and its interface properties
Taishi Yamamoto; Noriyuki Taoka; Akio Ohta; Nguyen Xuan Truyen; Hisashi Yamada; Tokio Takahashi; Mitsuhisa Ikeda; Katsunori Makihara; Mitsuaki Shimizu; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年06月01日

Interface properties of SiO2/GaN structures formed by chemical vapor deposition with remote oxygen plasma mixed with Ar or He
Nguyen Xuan Truyen; Noriyuki Taoka; Akio Ohta; Katsunori Makihara; Hisashi Yamada; Tokio Takahashi; Mitsuhisa Ikeda; Mitsuaki Shimizu; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年06月01日

Energy band structure and electrical properties of Ga-oxide/GaN interface formed by remote oxygen plasma
Taishi Yamamoto; Noriyuki Taoka; Akio Ohta; Nguyen Xuan Truyen; Hisashi Yamada; Tokio Takahashi; Mitsuhisa Ikeda; Katsunori Makihara; Osamu Nakatsuka; Mitsuaki Shimizu; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年06月01日

Growth of two-dimensional Ge crystal by annealing of heteroepitaxial Ag/Ge(111) under N2 ambient
Ito Koichi; Ohta Akio; Kurosawa Masashi; Araidai Masaaki; Ikeda Mitsuhisa; Makihara Katsunori; Miyazaki Seiichi
Japanese Journal of Applied Physics, 2018年05月24日

High thermal stability of abrupt SiO2/GaN interface with low interface state density
Nguyen Xuan Truyen; Noriyuki Taoka; Akio Ohta; Katsunori Makihara; Hisashi Yamada; Tokio Takahashi; Mitsuhisa Ikeda; Mitsuaki Shimizu; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年04月01日, 査読有り

Direct evaluation of electrical dipole moment and oxygen density ratio at high-k dielectrics/SiO2 interface by X-ray photoelectron spectroscopy analysis
Nobuyuki Fujimura; Akio Ohta; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年04月01日

Segregated SiGe ultrathin layer formation and surface planarization on epitaxial Ag(111) by annealing of Ag/SiGe(111) with different Ge/(Si + Ge) compositions
Ito Koichi; Ohta Akio; Kurosawa Masashi; Araidai Masaaki; Ikeda Mitsuhisa; Makihara Katsunori; Miyazaki Seiichi
Japanese Journal of Applied Physics, 2018年03月09日

Formation of Mn-germanide nanodots on ultrathin SiO2 induced by remote hydrogen plasma
Yinghui Wen; Katsunori Makihara; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年01月01日

Electroluminescence of superatom-like Ge-core/Si-shell quantum dots by alternate field-effect-induced carrier injection
Katsunori Makihara; Mitsuhisa Ikeda; Nobuyuki Fujimura; Kentaro Yamada; Akio Ohta; Seiichi Miyazaki
Applied Physics Express, 2018年01月01日

Characterization of remote O2-plasma-enhanced CVD SiO2/GaN(0001) structure using photoemission measurements
Nguyen Xuan Truyen; Akio Ohta; Katsunori Makihara; Mitsuhisa Ikeda; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2018年01月01日

High Density Formation and Magnetoelectronic Transport Properties of Fe3Si Nanodots
Zhang Hai; Makihara Katsunori; Ikeda Mitsuhisa; Ohta Akio; Miyazaki Seiichi
SIGE, GE, AND RELATED COMPOUNDS: MATERIALS, PROCESSING, AND DEVICES 8, 2018年, 査読有り

Impact of phosphorus doping to multiple-stacked Si quantum dots on electron emission properties
Daichi Takeuchi; Katsunori Makihara; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2017年11月

First-principles study on adsorption structure and electronic state of stanene on alpha-alumina surface
Masaaki Araidai; Masashi Kurosawa; Akio Ohta; Kenji Shiraishi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2017年09月

Characterization of Interfacial Dipoles at Dielectric Stacks by XPS Analysis
S. Miyazaki; A. Ohta; N. Fujimura
Electrochemical Society Transaction, 2017年09月

Magnetoelectronic transport of double stack FePt nanodots
Katsunori Makihara; Taiga Kawase; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
APPLIED PHYSICS LETTERS, 2017年07月

Low-temperature formation of crystalline Si:H/Ge:H heterostructures by plasma-enhanced CVD in combination with Ni-nanodots seeding nucleation
Yimin Lu; Katsunori Makihara; Daichi Takeuchi; Mitsuhisa Ikeda; Akio Ohta; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2017年06月

Potential changes and chemical bonding features for Si-MOS structure as evaluated from HAXPES analysis
Akio Ohta; Hideki Murakami; Mitsuhisa Ikeda; Katsunori Makihara; Eiji Ikenaga; Seiichi Miyazaki
MICROELECTRONIC ENGINEERING, 2017年06月

Evaluation of energy distribution of filled defects of Si oxide thin films from total photoelectron yield spectroscopy
Akio Ohta; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
MICROELECTRONIC ENGINEERING, 2017年06月

Embedding of Ti Nanodots into SiOx and Its Impact on Resistance Switching Behaviors
Yusuke Kato; Akio Ohta; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2017年05月

Photoemission Study of Gate dielectrics on Gallim Nitride
S. Miyazaki; N. Truyen; A. Ohta; T. Yamamoto
Electrochemical Society Transaction, 2017年05月

Photoemission study on electrical dipole at SiO2/Si and HfO2/SiO2 interfaces
Nobuyuki Fujimura; Akio Ohta; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2017年04月

Processing and characterization of Si/Ge quantum dots
S. Miyazaki; K. Makihara; A. Ohta; M. Ikeda
Technical Digest - International Electron Devices Meeting, IEDM, 2017年01月31日, 査読有り

High-density formation of Ta nanodot induced by remote hydrogen plasma
Yaping Wang; Daichi Takeuchi; Akio Ohta; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2017年01月

Effects of remote hydrogen plasma on chemical bonding features and electronic states of 4H-SiC(0001) surface
Nguyen Xuan Truyen; Akio Ohta; Katsunori Makihara; Mitsuhisa Ikeda; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2017年01月

Nano spin-diodes using FePt-NDs with huge on/off current ratio at room temperature
Katsunori Makihara; Takeshi Kato; Yuuki Kabeya; Yusuke Mitsuyuki; Akio Ohta; Daiki Oshima; Satoshi Iwata; Yudi Darma; Mitsuhisa Ikeda; Seiichi Miyazaki
SCIENTIFIC REPORTS, 2016年09月, 査読有り

Surface-segregated Si and Ge ultrathin films formed by Ag-induced layer exchange process
Kurosawa Masashi; Ohta Akio; Araidai Masaaki; Zaima Shigeaki
Japanese Journal of Applied Physics, 2016年07月05日, 査読有り

Evaluation of Valence Band Top and Electron Affinity of SiO2 and Si-based Semiconductors Using XPS
N. Fujimura; A. Ohta; K. Makihara; S. Miyazaki
Japanese Journal of Applied Physics, 2016年07月, 査読有り

Impact of Embedded Mn Nanodots on Resistive Switching Characteristics of Si-rich Oxides as Measured in Ni-Electrodes MIM Diodes
T. Arai; A. Ohta; K. Makihara; S. Miyazaki
Japanese Journal of Applied Physics, 2016年05月, 査読有り

Study on electroluminescence from multiply-stacking valency controlled Si quantum dots
Takahisa Yamada; Katsunori Makihara; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
THIN SOLID FILMS, 2016年03月, 査読有り

Evaluation of field emission properties from multiple-stacked Si quantum dots
Daichi Takeuchi; Katsunori Makihara; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
THIN SOLID FILMS, 2016年03月, 査読有り

Bonding and Energy Alignment at Metal/TiO2 interfaces: A Density Functional Theory Study
H. Chen; P. Li; N. Umezawa; H. Abe; J. Ye; K. Shiraishi; A. Ohta; S. Miyazaki
The Journal of Physical Chemistry, 2016年02月, 査読有り

Evaluation of dielectric function of thermally-grown SiO2 and GeO2 from energy loss signals for XPS core-line photoelectrons
Taishi Yamamoto; Akio Ohta; Mitsuhisa Ikeda; Katsunori Makihara; Seiichi Miyazaki
ECS Transactions, 2016年, 査読有り

Effect of Ge core size on photoluminescence from Si quantum dots with Ge core
Kentaro Yamada; Keigo Kondo; Katsunori Makihara; Mitsuhisa Ikeda; Akio Ohta; Seiichi Miyazaki
ECS Transactions, 2016年, 査読有り

Formation and Characterization of High Density FeSi Nanodots on SiO2 Induced by Remote H2 Plasma
H. Zhang; K. Makihara; A. Ohta; M. Ikeda; S. Miyazaki
Japanese Journal of Applied Physics, 2015年12月, 査読有り

The Interface Analysis of GaN Directly Grown on 0º off 6H-SiC
Z. Sun; A. Ohta; S. Miyazaki; K. Nagamatsu; M. Olsson; Z. Ye; M. Deki; Y. Honda; H. Amano
Japanese Journal of Applied Physics, 2015年12月, 査読有り

High Density Formation of FePt Alloy Nanodots Induced by Remote Hydrogen Plasma and Characterization of their Magnetic Properties
R. Fukuoka; K. Makihara; H. Zhang; A. Ohta; T. Kato; S. Iwata; M. Ikeda; S. Miyazaki
Transactions of the Materials Research Society of Japan, 2015年12月, 査読有り

Increase in the work function of W/WO3 by helium plasma irradiation
S. Kajita; A. Ohta; T. Ishida; K. Makihara; T. Yoshida; N. Ohno
Japanese Journal of Applied Physics, 2015年11月, 査読有り

High-Resolution Photoemission Study of High-k Dielectric Bilayer Stack on Ge(100)
S. Miyazaki; A. Ohta
Electrochemical Society Transaction, 2015年10月, 査読有り

Photoemission Study on Chemical Bonding Features and Electronic Defect States of Thermally-grown SiO2/4H-SiC Structure
H. Watanabe; A. Ohta; K. Makihara; S. Miyazaki
Electrochemical Society Transaction, 2015年10月, 査読有り

Progress in determination method for ultrathin Si-based oxide bandgaps from analysis of energy loss signals for photoelectrons
Akio Ohta; Hideki Murakami; Katsunori Makihara; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2015年06月, 査読有り

Electronic Defect States in Thermally-grown SiO2/4H-SiC Structure Measured by Total Photoelectron Yield Spectroscopy
A. Ohta; K. Makihara; S. Miyazaki
Microelectronic Engineering, 2015年05月, 査読有り

Resistance-Switching Characteristics of Si-rich Oxide Evaluated by Using Ni Nanodots as Electrodes in Conductive AFM Measurements
Akio Ohta; Chong Liu; Takashi Arai; Daichi Takeuchi; Hai Zhang; Katsunori Makihara; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2015年05月, 査読有り

Resistive switching characteristics of Si-rich oxides with embedding Ti nanodots
Yusuke Kato; Takashi Arai; Akio Ohta; Katsunori Makihara; Seiichi Miyazaki
ECS Transactions, 2015年, 査読有り

Properties of Al Ohmic Contacts to n-type 4H-SiC employing a Phosphorus-Doped and Crystallized Amorphous-Silicon Interlayer
Hiroaki Hanafusa; Akio Ohta; Ryuuhei Ashihara; Keisuke Maruyama; Tsubasa Mizuno; Shohei Hayashi; Hideki Murakami; Seiichiro Higashi
SILICON CARBIDE AND RELATED MATERIALS 2013, PTS 1 AND 2, 2014年, 査読有り

Characterization of Chemical Bonding Features and Interfacial Reactions in Ge-MIS Structure with HfO2/TaGexOy Dielectric Stack
Akio Ohta; Hideki Murakami; Kuniaki Hashimoto; Katsunori Makihara; Seiichi Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 6: MATERIALS, PROCESSING, AND DEVICES, 2014年, 査読有り

Pre-Amorphization and Low-Temperature Implantation for Efficient Activation of Implanted As in Ge(100)
Hideki Murakami; Shinya Hamada; Takahiro Ono; Kuniaki Hashimoto; Akio Ohta; Hiroaki Hanafusa; Seiichiro Higashi; Seiichi Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 6: MATERIALS, PROCESSING, AND DEVICES, 2014年, 査読有り

Characterization of Electron Emission from High Density Self-aligned Si-based Quantum Dots by Conducting-Probe Atomic Force Microscopy
Daichi Takeuchi; Katsunori Makihara; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 6: MATERIALS, PROCESSING, AND DEVICES, 2014年, 査読有り

Photoluminescence Study of Si Quantum Dots with Ge Core
Katsunori Makihara; Keigo Kondo; Mitsuhisa Ikeda; Akio Ohta; Seiichi Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 6: MATERIALS, PROCESSING, AND DEVICES, 2014年, 査読有り

Characterization of resistive switching behaviors of RF sputtered Si oxide resistive random access memories with Ti-based electrodes
Akio Ohta; Motoki Fukusima; Katsunori Makihara; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
Japanese Journal of Applied Physics, 2013年11月, 査読有り

Resistive Switching Properties of SiOx/TiO2 Multi-Stack in Ti-electrode MIM Diodes
A. Ohta; K. Makihara; M. Fukusima; H. Murakami; S. Higashi; S. Miyazaki
Electrochemical Society Transaction, 2013年10月, 査読有り

Evaluation of Chemical Composition and Bonding Features of Pt/SiOx/Pt MIM Diodes and Its Impact on Resistance Switching Behavior
Akio Ohta; Katsunori Makihara; Mitsuhisa Ikeda; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2013年05月, 査読有り

X-ray Photoemission Study of SiO2/Si/Si0.55Ge0.45/Si Heterostructures
A. Ohta; K. Makihara; S. Miyazaki; M. Sakuraba; J. Murota
IEICE TRANSACTIONS on Electronics, 2013年05月

Control of Interfacial Reaction of HfO2/Ge Structure by Insertion of Ta Oxide Layer
Kuniaki Hashimoto; Akio Ohta; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2013年05月, 査読有り

Characterization of Resistive Switching of Pt/Si-Rich Oxide/TiN System
Motoki Fukusima; Akio Ohta; Katsunori Makihara; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2013年05月, 査読有り

XPS Study of Energy Band Alignment between Hf-La Oxides and Si(100)
A. Ohta; H. Murakami; S. Higashi; S. Miyazaki
Transactions of the Materials Research Society of Japan, 2013年04月, 査読有り

High thermal stability of abrupt SiO2/GaN interface with low interface state density
N. Truyen; N. Taoka; A. Ohta; K. Makihara; H. Yamada; T. Takahashi; M. Ikeda; M. Shimizu; S. Miyazaki
Japanese Journal of Applied Physics, 2013年03月

Determination of Energy Band Alignment in Ultrathin Hf-based Oxide/Pt System
A. Ohta; H. Murakami; S. Higashi; S. Miyazaki
15TH INTERNATIONAL CONFERENCE ON THIN FILMS (ICTF-15), 2013年, 査読有り

Characterization of Ultrathin Ta-oxide Films Formed on Ge(100) by ALD and Layer-by-Layer Methods
K. Mishima; H. Murakami; A. Ohta; S. K. Sahari; T. Fujioka; S. Higashi; S. Miyazaki
15TH INTERNATIONAL CONFERENCE ON THIN FILMS (ICTF-15), 2013年, 査読有り

Kinetics of thermally oxidation of Ge(100) surface
S. K. Sahari; A. Ohta; M. Matsui; K. Mishima; H. Murakami; S. Higashi; S. Miyazaki
Journal of Physics: Conference Series, 2013年, 査読有り

Evaluation of Chemical Bonding Features and Resistance Switching Behaviors of Ultrathin Si Oxide Dielectric Sandwiched Between Pt Electrodes
Akio Ohta; Yuta Goto; Shingo Nishigaki; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2012年06月, 査読有り

Characterization of Resistance-Switching of Si Oxide Dielectrics Prepared by RF Sputtering
Akio Ohta; Yuta Goto; Shingo Nishigaki; Guobin Wei; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2012年05月, 査読有り

Layer transfer and simultaneous activation of phosphorus atoms in silicon films by near-infrared semiconductor diode laser irradiation
Yoshitaka Kobayashi; Kohei Sakaike; Shogo Nakamura; Mitsuhisa Ikeda; Akio Ohta; Seiichiro Higashi
Materials Research Society Symposium Proceedings, 2012年, 査読有り

Control of Schottky Barrier Height at Al/p-Ge Junctions by Ultrathin Layer Insertion
A. Ohta; M. Matsui; H. Murakami; S. Higashi; S. Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 5: MATERIALS, PROCESSING, AND DEVICES, 2012年, 査読有り

Characterization of Resistance-Switching Properties of SiOx Films Using Pt Nanodots Electrodes
Katsunori Makihara; Motoki Fukushima; Akio Ohta; Mitsuhisa Ikeda; Seiichi Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 5: MATERIALS, PROCESSING, AND DEVICES, 2012年, 査読有り

X-ray Photoelectron Spectroscopy Study of Interfacial Reactions between Metal and Ultrathin Ge Oxide
Akio Ohta; Tomohiro Fujioka; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2011年10月, 査読有り

Evaluation of Chemical Structure and Resistance Switching Characteristics of Undoped Titanium Oxide and Titanium-Yttrium Mixed Oxide
Akio Ohta; Yuta Goto; Guobin Wei; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2011年10月, 査読有り

Characterization of chemical bonding features at metal/GeO2 Interfaces by X-ray photoelectron spectroscopy
Masafumi Matsui; Hideki Murakami; Tomohiro Fujioka; Akio Ohta; Seiichiro Higashi; Seiichi Miyazaki
MICROELECTRONIC ENGINEERING, 2011年07月, 査読有り

Impact of insertion of ultrathin TaOx, layer at the Pt/TiO2 interface on resistive switching characteristics
Guobin Wei; Hideki Murakami; Tomohiro Fujioka; Akio Ohta; Yuta Goto; Seiichiro Higashi; Seiichi Miyazaki
MICROELECTRONIC ENGINEERING, 2011年07月, 査読有り

The Impact of Y Addition into TiO2 on Electronic States and Resistive Switching Characteristics
Akio Ohta; Yuta Goto; Mohd Fairuz Kazalman; Guobin Wei; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2011年06月, 査読有り

High-density formation of Ge quantum dots on SiO2
Katsunori Makihara; Mitsuhisa Ikeda; Akio Ohta; Shotaro Takeuchi; Yosuke Shimura; Shigeaki Zaima; Seiichi Miyazaki
SOLID-STATE ELECTRONICS, 2011年06月, 査読有り

Impact of Annealing Ambience on Resistive Switching in Pt/TiO2/Pt Structure
Guobin Wei; Yuta Goto; Akio Ohta; Katsunori Makihara; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
IEICE TRANSACTIONS ON ELECTRONICS, 2011年05月, 査読有り

Activation of As Atoms in Ultrashallow Junction during Milli- and Microsecond Annealing Induced by Thermal-Plasma-Jet Irradiation
Kazuya Matsumoto; Akio Ohta; Seiichi Miyazaki; Seiichiro Higashi
JAPANESE JOURNAL OF APPLIED PHYSICS, 2011年04月, 査読有り

Native Oxidation Growth on Ge(111) and (100) Surfaces
Siti Kudnie Sahari; Hideki Murakami; Tomohiro Fujioka; Tatsuya Bando; Akio Ohta; Katsunori Makihara; Seiichiro Higashi; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2011年04月, 査読有り

Characterization of Mg diffusion into HfO2/SiO 2/Si(100) stacked structures and its impact on detect state densities
Akio Ohta; Daisuke Kanme; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
IEICE Transactions on Electronics, 2011年, 査読有り

Electron and hole components of tunneling currents through an interfacial oxide-high-k gate stack in metal-oxide-semiconductor capacitors
Fatimah A. Noor; Mikrajuddin Abdullah; Sukirno; Khairurrijal; Akio Ohta; Seiichi Miyazaki
JOURNAL OF APPLIED PHYSICS, 2010年11月, 査読有り

Contribution of Carbon to Growth of Boron-Containing Cluster in Heavily Boron-Doped Silicon
Hiroshi Itokawa; Akio Ohta; Mitsuhisa Ikeda; Ichiro Mizushima; Seiichi Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2010年08月, 査読有り

Self-Align Formation of Si Quantum Dots
K. Makihara; M. Ikeda; H. Deki; A. Ohta; S. Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 4: MATERIALS, PROCESSING, AND DEVICES, 2010年, 査読有り

Characterization of Interfaces between Chemically Cleaned or Thermally Oxidized Germanium and Metals
Hideki Murakami; Tomohiro Fujioka; Akio Ohta; Tatsuya Bando; Seiichiro Higashi; Seiichi Miyazaki
SIGE, GE, AND RELATED COMPOUNDS 4: MATERIALS, PROCESSING, AND DEVICES, 2010年, 査読有り

Characterization of interfacial reaction and chemical bonding features of LaOx/HfO2 stack structure formed on thermally-grown SiO2/Si(100)
Akio Ohta; Daisuke Kanme; Hideki Murakami; Seiichiro Higashi; Seiichi Miyazaki
MICROELECTRONIC ENGINEERING, 2009年07月, 査読有り

Electronic Charged States of Pt-silicide Nanodots as Evaluated by Using an AFM/Kelvin Probe Technique
K. Makihara; K. Shimanoe; M. Ikeda; A. Ohta; S. Higashi; S. Miyazaki
Transactions of Materials Research Society of Japan, 2009年06月, 査読有り

Photoemission study of fully silicided Pd2Si gates with interface modification induced by dopants
Takuji Hosoi; Akio Ohta; Seiichi Miyazaki; Hiroyuki Shiraishi; Kentaro Shibahara
Applied Physics Letters, 2009年, 査読有り

Surface potential changes induced by physisorption of Si-tagged protein A on HF-last Si(100) and thermally grown SiO2 surfaces
S. Mahboob; K. Makihara; A. Ohta; S. Higashi; Y. Hata; A. Kuroda; S. Miyazaki
ECS Transactions, 2009年, 査読有り

The influence of defects and impurities on electrical properties of high high - k diele dielectrics trics
J. Da̧browski; S. Miyazaki; S. Inumiya; G. Kozłowski; G. Lippert; G. Łu-Pina; Y. Nara; H. J. Müssig; A. Ohta; Y. Pei
Materials Science Forum, 2009年, 査読有り

Interface properties and effective work function of Sb-predoped fully silicided NiSi gate
Takuji Hosoi; Kosuke Sano; Akio Ohta; Katsunori Makihara; Hirotaka Kaku; Seiichi Miyazaki; Kentaro Shibahara
SURFACE AND INTERFACE ANALYSIS, 2008年06月, 査読有り

Theoretical investigation of metal/dielectric interfaces-breakdown of schottky barrier limits
Kenji Shiraishi; Takashi Nakayama; Takashi Nakaoka; Akio Ohta; Seiichi Miyazaki
ECS Transactions, 2008年, 査読有り

Photoemission study of Metal/HfSiON gate stack
S. Miyazaki; H. Yoshinaga; A. Ohta; Y. Akasaka; K. Shiraishi; K. Yamada; S. Inumiya; M. Kadoshima; Y. Nara
ECS Transactions, 2008年, 査読有り

Performance improvement of HfAlOxN n-channel metal-oxide-semiconductor field-effect transistors by controlling the bonding configuration of nitrogen atoms coordinated to Hf atoms
Kunihiko Iwamoto; Tomoaki Nishimura; Akio Ohta; Koji Tominaga; Toshihide Nabatame; Seiichi Miyazaki; Akira Toriumi
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2007年12月, 査読有り

Characterization of chemical bonding features and defect state density in HfSiOxNy/SiO2 gate stack
A. Ohta; Y. Munetaka; A. Tsugou; K. Makihara; H. Murakami; S. Higashi; S. Miyazaki; S. Inumiya; Y. Nara
Microelectronic Engineering, 2007年10月, 査読有り

Theoretical studies on metal/high-k gate stacks
Kenji Shiraishi; Yasushi Akasaka; Genji Nakamura; Takashi Nakayama; Seiichi Miyazaki; Heiji Watanabe; Akio Ohta; Kenji Ohmori; Toyohiro Chikyow; Yasuo Nara; Kikuo Yamabe; Keisaku Yamada
ECS Transactions, 2007年, 査読有り

Theoretical studies on fermi level pining of Hf-based high-k gate stacks based on thermodynamics
K. Shiraishi; Y. Akasaka; G. Nakamura; M. Kadoshima; H. Watanabe; A. Ohta; S. Miyazaki; K. Ohmori; T. Chikyow; K. Yamabe; Y. Nara; Y. Ohji; K. Yamada
ECS Transactions, 2007年, 査読有り

Improvement in fermi-level pinning of p-MOS metal gate electrodes on HfSiON by employing Ru gate electrodes
M. Kadoshima; Y. Sugita; K. Shiraishi; H. Watanabe; A. Ohta; S. Miyazaki; K. Nakajima; T. Chikyow; K. Yamada; T. Aminaka; E. Kurosawa; T. Matsuki; T. Aoyama; Y. Nara; Y. Ohji
ECS Transactions, 2007年, 査読有り

Photoemission study of ultrathin GeO2/Ge heterostructures formed by UV-O3 oxidation
Akio Ohta; Hiroshi Nakagawa; Hideki Murakami; Seiichirou Higashi; Seiichi Miyazaki
e-Journal of Surface Science and Nanotechnology, 2006年02月10日, 査読有り

Photoemission study of ultrathin HfSiON/Si(100) systems
A. Ohta; H. Nakagawa; H. Murakami; S. Higashi; S. Miyazaki; S. Inumiya; Y. Nara
Transactions of the Materials Research Society of Japan, Vol 31, No 1, 2006年, 査読有り

Characterization of FUSI-PtSi formed on ultrathin HfO2/Si(100) by photoelectron spectroscopy
Y. Munetaka; F. Takeno; A. Ohta; H. Murakami; S. Higashi; S. Miyazaki; M. Kadoshima; T. Nabatame
Transactions of the Materials Research Society of Japan, Vol 31, No 1, 2006年, 査読有り

Influence of thermal annealing on defect states and chemical structures in ultrathin Al2O3/SiNx/poly-Si
M. Taira; A. Ohta; H. Nakagawa; S. Miyazaki; K. Komeda; M. Horikawa; K. Koyama
Transactions of the Materials Research Society of Japan, Vol 31, No 1, 2006年, 査読有り

Nitridation of Ge(100) surfaces by vacuum-ultra violet (VUV) irradiation in NH3 ambience
H. Nakagawa; A. Ohta; M. Taira; H. Abe; H. Murakami; S. Higashi; S. Miyazaki
Transactions of the Materials Research Society of Japan, Vol 31, No 1, 2006年, 査読有り

Impact of nitrogen incorporation into yttrium oxide on chemical bonding features and electrical properties
Hiroyuki Abe; Hiroshi Nakagawa; Masahiro Taira; Akio Ohta; Seiichiro Higashi; Seiichi Miyazaki
Transactions of the Materials Research Society of Japan, Vol 31, No 1, 2006年, 査読有り

Depth profiling of chemical and electronic structures and defects of ultrathin HfSiON on Si(100)
S. Miyazaki; A. Ohta; S. Inumiya; Y. Nara; K. Yamada
ECS Transactions, 2006年, 査読有り

Physics of metal/high-k interfaces
Takashi Nakayama; Kenji Shiraishi; Seiichi Miyazaki; Yasushi Akasaka; Takashi Nakaoka; Kazuyoshi Torii; Akio Ohta; Parhat Ahmet; Kenji Ohmori; Naoto Umezawa; Heiji Watanabe; Toyohiro Chikyow; Yasuo Nara; Hiroshi Iwai; Keisaku Yamada
ECS Transactions, 2006年, 査読有り

Characterization of Sb-Doped Fully-Silicided NiSi/SiO2/Si MOS Structure
T. Hosoi; K. Sano; M. Hino; A. Ohta; K. Mikihara; H. Kaku; S. Miyazaki; K. Shibahara
Abstracts of 2005 International Semiconductor Device Research Symposium (ISDRS2005, Bethesda, Maryland, USA), 2005年12月, 査読有り

Analysis of Leakage Current through Al/HfAlOx/SiONx/Si(100) MOS Capacitors
S. Nagamachi; A. Ohta; F. Takeno; H. Nakagawa; H. Murakami; S. Miyazaki; T. Kawahara; K. Torii
Transactions of the Materials Research Society of Japan, 2005年03月, 査読有り

Impact of Rapid Thermal Anneal on ALCVD-Al2O3/Si3N4/Si(100) Stack Structures -Photoelectron Spectroscopy
F. Takeno; A. Ohta; S. Miyazaki; K. Komeda; M. Horikawa; K. Koyama
Transactions of the Materials Research Society of Japan, 2005年03月, 査読有り

Impact of rapid thermal O-2 anneal on dielectric stack structures of hafnium aluminate and silicon dioxide formed on Si(100)
A Ohta; H Nakagawa; H Murakami; S Higashi; T Kawahara; K Torii; S Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2004年11月, 査読有り

Characterization of interfacial oxide layers in heterostructures of hafnium oxides formed on NH3-nitrided Si(100)
H Nakagawa; A Ohta; F Takeno; S Nagamachi; H Murakami; S Higashi; S Miyazaki
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2004年11月, 査読有り

Photoelectron spectroscopy of ultrathin yttrium oxide films on Si(100)
A Ohta; M Yamaoka; S Miyazaki
MICROELECTRONIC ENGINEERING, 2004年04月, 査読有り

絶縁性基板上のゲルマニウム二次元結晶の創製と電子物性の解明 (代表)
日本学術振興会, 科学研究費助成事業, 基盤研究(B)
2019年04月 - 現在

ゲルマニウム系二次元ハニカム結晶の自己組織化形成と結晶構造・電子状態制御 (代表)
科学研究費助成事業, 挑戦的研究（萌芽）
2018年06月 - 現在

Si-Ge系スーパーアトム構造のセルフアライン集積による光・電子物性制御 (分担)
日本学術振興会, 科学研究費助成事業, 基盤研究(S)
2015年07月 - 2019年03月

Si系酸化薄膜抵抗変化材料における欠陥分布の高感度計測および精密制御 (代表)
日本学術振興会, 科学研究費助成事業, 若手研究(A)
2015年04月 - 2018年03月

シリコン系二次元ハニカム結晶の創製と電子物性の解明 (代表)
日本学術振興会, 科学研究費助成事業, 挑戦的萌芽研究
2015年04月 - 2017年03月

磁性合金ナノドットハイブリッド集積によるスピン物性制御と新機能メモリ応用 (分担)
日本学術振興会, 科学研究費助成事業, 基盤研究(A)
2015年04月 - 2015年06月

シリコン酸化薄膜を用いた微細抵抗変化型メモリの研究 (代表)
日本学術振興会, 科学研究費助成事業, 若手研究(B)
2013年04月 - 2015年03月

Ti系酸化膜を用いた抵抗変化型メモリの化学結合状態と抵抗変化現象の相関の解明 (代表)
日本学術振興会, 科学研究費助成事業, 若手研究(スタートアップ)
2009年04月 - 2011年03月

次世代MOSトランジスタ用Hf系高誘電率ゲート絶縁膜の研究
日本学術振興会, 科学研究費助成事業, 特別研究員奨励費
2007年04月 - 2009年03月