Tomohiro Koyama

3.6k total citations
133 papers, 2.5k citations indexed

About

Tomohiro Koyama is a scholar working on Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials and Condensed Matter Physics. According to data from OpenAlex, Tomohiro Koyama has authored 133 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Atomic and Molecular Physics, and Optics, 50 papers in Electronic, Optical and Magnetic Materials and 35 papers in Condensed Matter Physics. Recurrent topics in Tomohiro Koyama's work include Magnetic properties of thin films (84 papers), Magnetic Properties and Applications (32 papers) and ZnO doping and properties (24 papers). Tomohiro Koyama is often cited by papers focused on Magnetic properties of thin films (84 papers), Magnetic Properties and Applications (32 papers) and ZnO doping and properties (24 papers). Tomohiro Koyama collaborates with scholars based in Japan, Germany and South Korea. Tomohiro Koyama's co-authors include Daichi Chiba, Teruo Ono, Y. Nakatani, Yuki Hibino, Shunsuke Fukami, Shinya Nagai, N. Ishiwata, Norikazu Ohshima, Takatsugu Yamamoto and Ken Takaki and has published in prestigious journals such as Nature, Physical Review Letters and Nature Communications.

In The Last Decade

Tomohiro Koyama

131 papers receiving 2.5k citations

Peers

Countries citing papers authored by Tomohiro Koyama

Since Specialization

Citations

This map shows the geographic impact of Tomohiro Koyama'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 Tomohiro Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Tomohiro Koyama more than expected).

Fields of papers citing papers by Tomohiro Koyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Tomohiro Koyama. 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 Tomohiro Koyama. The network helps show where Tomohiro Koyama may publish in the future.

Co-authorship network of co-authors of Tomohiro Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Tomohiro Koyama. A scholar is included among the top collaborators of Tomohiro Koyama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Tomohiro Koyama. Tomohiro Koyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Modulation of perpendicular magnetic anisotropy in CoFeB/MgO structure by an application of biaxial tensile strain 2023 ·Applied Physics Express ·(unknown), (unknown), (unknown), Tomohiro Koyama, Daichi Chiba	2
2	Modulation of spin–orbit torque by insertion of a NiO layer in a Pt/Co structure formed on Al ₂ O ₃ and Si/SiO _x substrate 2022 ·Japanese Journal of Applied Physics ·Toshiaki Morita, (unknown), Tomohiro Koyama, Daichi Chiba	1
3	Electric field effect on spectroscopic g -factor and magnetic anisotropy in a Pt/Co/MgO ultrathin film 2022 ·Japanese Journal of Applied Physics ·(unknown), Takahiro Moriyama, (unknown), Masashi Kawaguchi, Tomohiro Koyama, Daichi Chiba, Teruo Ono	2
4	Enhanced unidirectional spin Hall magnetoresistance in a Pt/Co system with a Cu interlayer 2021 ·Physical review. B. ·(unknown), Tomohiro Koyama, Daichi Chiba	13
5	Current-induced perpendicular magnetization switching without external magnetic field in gate-induced asymmetric structure 2021 ·Applied Physics Letters ·(unknown), Tomohiro Koyama, Daichi Chiba	5
6	Modification of interfacial spin-orbit torque in Co/Pt/oxide hybrid structures 2021 ·Physical review. B. ·Takamasa Hirai, (unknown), Shinya Ota, Motohiro Suzuki, Tomohiro Koyama, Daichi Chiba	8
7	Strain-induced modulation of temperature characteristics in ferrimagnetic Tb–Fe films 2021 ·Scientific Reports ·Shinya Ota, (unknown), Hiroyuki Awano, Akira Ando, Kentaro Toyoki, Yoshinori Kotani, Tetsuya Nakamura, Tomohiro Koyama, Daichi Chiba	6
8	Real-space and pulse-by-pulse analysis of domain wall creep induced by spin-Hall torque 2019 ·Japanese Journal of Applied Physics ·Takuo Ohkochi, Kab‐Jin Kim, Sanghoon Kim, Y. Yoshimura, Hironobu Tanigawa, Norikazu Ohshima, Tomohiro Koyama, Masato Kotsugi, Daichi Chiba, Teruo Ono, T. Kinoshita	2
9	Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic–non-magnetic bilayers 2019 ·Nature Physics ·(unknown), Lê Đức Anh, Takahiro Chiba, Tomohiro Koyama, Daichi Chiba, Masaaki Tanaka	29
10	Correlation of the Dzyaloshinskii–Moriya interaction with Heisenberg exchange and orbital asphericity 2018 ·Nature Communications ·Sanghoon Kim, Kohei Ueda, Gyungchoon Go, (unknown), Kyung‐Jin Lee, Abderrezak Belabbes, Aurélien Manchon, Motohiro Suzuki, Yoshinori Kotani, Tetsuya Nakamura, Kohji Nakamura, Tomohiro Koyama, Daichi Chiba, K. Yamada, Duck‐Ho Kim, Takahiro Moriyama, Kab‐Jin Kim, Teruo Ono	66
11	Microscopic Investigation into the Electric Field Effect on Proximity-Induced Magnetism in Pt 2018 ·Physical Review Letters ·K. Yamada, Motohiro Suzuki, Abdul‐Muizz Pradipto, Tomohiro Koyama, (unknown), (unknown), Shimpei Ono, T. Taniguchi, (unknown), Fuyuki Ando, Kazuhiro ODA, (unknown), Takahiro Moriyama, Kohji Nakamura, Daichi Chiba, Teruo Ono	24
12	Characterization of Actinobacillus pleuropneumoniae field strains antigenically related to the 3-6-8-15 group from diseased pigs in Japan and Argentina 2017 ·Revista Argentina de Microbiología ·Ho To, (unknown), Shinya Nagai, (unknown), Tomohiro Koyama, Jina Lee, (unknown), (unknown), Atsushi Oshima, (unknown)	7
13	Electric-field control of magnetic moment in Pd 2015 ·Scientific Reports ·(unknown), Yuki Hibino, (unknown), Tomohiro Koyama, Kazumoto Miwa, Shimpei Ono, Daichi Chiba	48
14	Two-barrier stability that allows low-power operation in current-induced domain-wall motion 2013 ·Nature Communications ·Kab‐Jin Kim, Ryo Hiramatsu, Tomohiro Koyama, Kohei Ueda, Y. Yoshimura, Daichi Chiba, Kensuke Kobayashi, Y. Nakatani, Shunsuke Fukami, Michihiko Yamanouchi, Hideo Ohno, Hiroshi Kohno, Gen Tatara, Teruo Ono	43
15	A Tecpr1-Dependent Selective Autophagy Pathway Targets Bacterial Pathogens 2011 ·Cell Host & Microbe ·Michinaga Ogawa, Yuko Yoshikawa, T. Kobayashi, Hitomi Mimuro, (unknown), Kotaro Kiga, (unknown), Hiroshi Ashida, Mitsutaka Yoshida, Shigeru Kakuta, Tomohiro Koyama, Yoshiyuki Goto, Takahiro Nagatake, Shinya Nagai, Hiroshi Kiyono, Magdalena Kawalec, Jean‐Marc Reichhart, Chihiro Sasakawa	122
16	Long-term stability of partial nitritation of swine wastewater digester liquor and its subsequent treatment by Anammox 2008 ·Bioresource Technology ·Takatsugu Yamamoto, Ken Takaki, Tomohiro Koyama, Koichi Furukawa	176
17	A 14-3-3 protein homologue is expressed in feline enteroepithelial-stages of Toxoplasma gondii 2001 ·Veterinary Parasitology ·Tomohiro Koyama, (unknown), (unknown), Yoshitaka Omata, Xuenan Xuan, Noboru Inoue, Ryuichiro Maeda, Takeshi Mikami, Atsushi Saito	18
18	Activity of rubber transferase and rubber particle size in Hevea latex. 2000 ·Journal of Rubber Research ·(unknown), Yasuyuki Tanaka, (unknown), Tomohiro Koyama	24
19	Infectivity of feline enteroepithelial stages of Toxoplasma gondii isolated by Percoll-density gradient centrifugation 1999 ·Veterinary Parasitology ·Yoshitaka Omata, (unknown), (unknown), (unknown), (unknown), (unknown), Tomohiro Koyama, (unknown), (unknown), Mitsuhiro Takagi, Atsushi Saitô, Yutaka Toyoda	6
20	Oxygen Diffusion Through Mitochondrial Membranes 1989 ·Advances in experimental medicine and biology ·Tomohiro Koyama, Masataka Kinjo, Tsunehisa Araiso	2

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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