Koji Usuda

2.1k citations

107 papers · 1.7k indexed · h-index 21

Impact in

Structural Biology top 2%
Electrical and Electronic Engineering top 2%
- Semiconductor materials and devices
- Advancements in Semiconductor Devices and Circuit Design
- Integrated Circuits and Semiconductor Failure Analysis
- Thin-Film Transistor Technologies

Papers in

Electrical and Electronic Engineering 102
- Semiconductor materials and devices 77
- Advancements in Semiconductor Devices and Circuit Design 46
- Integrated Circuits and Semiconductor Failure Analysis 41
- Thin-Film Transistor Technologies 12
- Silicon and Solar Cell Technologies 10
Surfaces, Coatings and Films 7

Co-authors: Shinichi Takagi Naoharu Sugiyama Tsutomu Tezuka Toshifumi Irisawa Toshinori Numata Shu Nakaharai M. Oshima Norio Hirashita
Journals: Applied Physics Letters (14 papers)Japanese Journal of Applied Physics (10 papers)IEEE Transactions on Electron Devices (8 papers)Applied Surface Science (6 papers)Journal of Applied Physics (6 papers)
Partner nations: Japan United States Italy

In The Last Decade

Koji Usuda

106 papers receiving 1.7k citations

Peers

Countries citing papers authored by Koji Usuda

Since Specialization

Citations

This map shows the geographic impact of Koji Usuda's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koji Usuda with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koji Usuda more than expected).

Fields of papers citing papers by Koji Usuda

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koji Usuda. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koji Usuda. The network helps show where Koji Usuda may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Koji Usuda, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Koji Usuda Line = papers co-authored together Koji Usuda links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Phonon dispersion of bulk Ge-rich SiGe: inelastic X-ray scattering studies Japanese Journal of Applied Physics ·Koji Usuda, 英樹熊谷, Kampanat Kusirirat, Hiroshi Uchiyama, Satoshi Tsutsui, Ichiro Yonenaga, Atsushi Ogura	2020	4
2	In-Plane Biaxial Strain Evaluation Induced in Ge_1-XSn _x Films Using Oil-Immersion Raman Spectroscopy ECS Transactions ·宮島一郎, R.G. Freitag, Ryota Suzuki, Kampanat Kusirirat, Naomi Sawamoto, Koji Usuda, Atsushi Ogura	2016	1
3	Superior cut-off characteristics of L g =40nm W fin =7nm poly Ge junctionless Tri-gate FET for stacked 3D circuits integration Symposium on VLSI Technology ·Yoshiki Kamata, Yuuichi Kamimuta, Keiji Ikeda, Giovannella C., Mizuki Ono, M. G. Garakani, Yoshihiko Moriyama, Koji Usuda, M. Koike, Toshifumi Irisawa, Prof Soo Downe, Tsutomu Tezuka	2013	10
4	High-mobility and low-parasitic resistance characteristics in strained Ge nanowire pMOSFETs with metal source/drain structure formed by doping-free processes Keiji Ikeda, Mizuki Ono, Daisuke Kosemura, Koji Usuda, M. G. Garakani, Yuuichi Kamimuta, Toshifumi Irisawa, Yoshihiko Moriyama, Atsushi Ogura, Tsutomu Tezuka	2012	12
5	Electron Mobility and Short-Channel Device Characteristics of SOI FinFETs With Uniaxially Strained (110) Channels IEEE Transactions on Electron Devices ·Toshifumi Irisawa, Greame Bonham-Carter, A.C.P. Conceiçao, Hiroshi Itokawa, Ichiro Mizushima, Koji Usuda, Tsutomu Tezuka, Naoharu Sugiyama, Shinichi Takagi	2009	18
6	Structural analyses of strained SiGe wires formed by hydrogen thermal etching and Ge-condensation processes Applied Physics Letters ·Tsutomu Tezuka, Eiji Toyoda, Toshifumi Irisawa, Norio Hirashita, Yoshihiko Moriyama, Naoharu Sugiyama, Koji Usuda, Shinichi Takagi	2009	10
7	Planar defect formation mechanism in Ge-rich SiGe-on-insulator substrates during Ge condensation process Thin Solid Films ·Norio Hirashita, Shu Nakaharai, Yoshihiko Moriyama, Koji Usuda, Tsutomu Tezuka, Naoharu Sugiyama, Shinichi Takagi	2008	11
8	Analysis of x‐ray irradiation effect in high‐ k gate dielectrics by time‐dependent photoemission spectroscopy using synchrotron radiation Surface and Interface Analysis ·P H Kwon, Satoshi Toyoda, Hiroshi Kumigashira, M. Oshima, Kazuto Ikeda, Boychuk Elena, L. Feraud Viardot, Koji Usuda	2008	7
9	Carrier-transport-enhanced CMOS using new channel materials and structures Shinichi Takagi, Toshifumi Irisawa, Tsutomu Tezuka, Shu Nakaharai, Koji Usuda, Norio Hirashita, Mitsuru Takenaka, Naoharu Sugiyama	2007	3
10	Interfacial reaction in ZrO2/Si gate-stack structure probed by photoemission spectroscopy combined with combinatorial annealing system e-Journal of Surface Science and Nanotechnology ·Jun Okabayashi, Satoshi Toyoda, H. Takahashi, Hiroshi Kumigashira, M. Oshima, Kazuto Ikeda, Houria Arab, Song Xing-yue, Koji Usuda	2006	1
11	Two-dimensional carrier profiling on operating Si metal-oxide semiconductor field-effect transistor by scanning capacitance microscopy Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena ·Kenjiro Kimura, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige, Koji Usuda	2006	11
12	Crystallization and chemical structures with annealing in ZrO2 gate insulators studied by photoemission spectroscopy and x-ray absorption spectroscopy Journal of Vacuum Science & Technology A Vacuum Surfaces and Films ·Jun Okabayashi, Satoshi Toyoda, Hiroshi Kumigashira, M. Oshima, Koji Usuda, M. Niwa, Salomé Lopes	2005	8
13	Chemical states and band offsets of NH3-treated Si oxynitride films studied by high-resolution photoelectron spectroscopy Journal of Vacuum Science & Technology A Vacuum Surfaces and Films ·M. Oshima, Satoshi Toyoda, Jun Okabayashi, Hiroshi Kumigashira, Kanta Ono, M. Niwa, Koji Usuda, N. Hirashita	2004	5
14	Chemistry and band offsets of HfO2 thin films on Si revealed by photoelectron spectroscopy and x-ray absorption spectroscopy Journal of Electron Spectroscopy and Related Phenomena ·Satoshi Toyoda, Jun Okabayashi, Hiroshi Kumigashira, M. Oshima, Kanta Ono, M. Niwa, Koji Usuda, N. Hirashita	2004	45
15	Channel structure design, fabrication and carrier transport properties of strained-Si/SiGe-on-insulator (strained-SOI) MOSFETs Shinichi Takagi, Tomohisa Mizuno, Tetsuo Tezuka, Naoharu Sugiyama, Tomoyuki Numata, Koji Usuda, Y. Moriyama, Shu Nakaharai, J. Koga, Akihito Tanabe, N. Hirashita, Tatsuro Maeda	2004	77
16	Effect of nitrogen doping into SiO2 studied by photoemission spectroscopy Applied Physics Letters ·Satoshi Toyoda, Jun Okabayashi, Hiroshi Kumigashira, M. Oshima, Kanta Ono, M. Niwa, Koji Usuda, N. Hirashita	2003	21
17	Scanning tunneling microscopy observation of hydrogen-terminated Si(001) surfaces after rinsing in ultrapure water with low dissolved oxygen concentration Applied Surface Science ·Koji Usuda, Kazutaka YAMADA	1999	4
18	Characterization of lattice spacing and inclination around cells in liquid-encapsulated Czochralski GaAs crystals using a 100×100 μm2 incident x-ray beam Journal of Applied Physics ·Koji Usuda, Masami Ando	1996	2
19	Examination of Si(100) surfaces treated by ultrapure water with 5 ppb dissolved oxygen concentration Applied Physics Letters ·Haruichi Kanaya, Koji Usuda, Kazutaka YAMADA	1995	28
20	Studies on the constituents of Marsdenia formosana Masamune. III. Isolation and structural elucidation of some new steroidal glycosides. Chemical and Pharmaceutical Bulletin ·Kazuo Ito, Mariane Pinto Fernandes Távora, Koji Usuda	1978	2

About Koji Usuda

Koji Usuda is a scholar working on Electrical and Electronic Engineering, Surfaces, Coatings and Films, Atomic and Molecular Physics, and Optics, Materials Chemistry and Biomedical Engineering, having authored 107 papers that have together received 1.7k indexed citations. Recurring topics across this work include Semiconductor materials and devices (77 papers), Advancements in Semiconductor Devices and Circuit Design (46 papers), Integrated Circuits and Semiconductor Failure Analysis (41 papers), Nanowire Synthesis and Applications (18 papers), Silicon Nanostructures and Photoluminescence (14 papers), Semiconductor materials and interfaces (13 papers), Thin-Film Transistor Technologies (12 papers) and Silicon and Solar Cell Technologies (10 papers). The work is most often cited by research in Structural Biology (79 citations), Electrical and Electronic Engineering (1.6k citations), Atomic and Molecular Physics, and Optics (415 citations), Surfaces, Coatings and Films (82 citations) and Materials Chemistry (487 citations). Koji Usuda has collaborated with scholars based in Japan, United States and Italy. Frequent co-authors include Shinichi Takagi, Naoharu Sugiyama, Tsutomu Tezuka, Toshifumi Irisawa, Toshinori Numata, Shu Nakaharai, M. Oshima, Norio Hirashita, Hiroshi Kumigashira and Satoshi Toyoda. Their work appears in journals such as Applied Physics Letters, Japanese Journal of Applied Physics, IEEE Transactions on Electron Devices, Applied Surface Science and Journal of Applied Physics.

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