Kohei Hamaya

4.1k total citations
208 papers, 3.4k citations indexed

About

Kohei Hamaya is a scholar working on Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials and Electrical and Electronic Engineering. According to data from OpenAlex, Kohei Hamaya has authored 208 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 161 papers in Atomic and Molecular Physics, and Optics, 98 papers in Electronic, Optical and Magnetic Materials and 77 papers in Electrical and Electronic Engineering. Recurrent topics in Kohei Hamaya's work include Magnetic properties of thin films (94 papers), Quantum and electron transport phenomena (79 papers) and Heusler alloys: electronic and magnetic properties (76 papers). Kohei Hamaya is often cited by papers focused on Magnetic properties of thin films (94 papers), Quantum and electron transport phenomena (79 papers) and Heusler alloys: electronic and magnetic properties (76 papers). Kohei Hamaya collaborates with scholars based in Japan, United Kingdom and Bangladesh. Kohei Hamaya's co-authors include S. Yamada, Masanobu Miyao, Kentarou Sawano, Kenji Kasahara, M. Yamada, Yuichiro Ando, Y. Fujita, Tomoyasu Taniyama, Taizoh Sadoh and Takeshi Kanashima and has published in prestigious journals such as Physical Review Letters, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Kohei Hamaya

201 papers receiving 3.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Kohei Hamaya Japan 33 2.4k 1.4k 1.4k 1.2k 286 208 3.4k
H. Saito Japan 28 1.3k 0.5× 1.1k 0.8× 1.2k 0.9× 2.1k 1.7× 526 1.8× 111 3.1k
Zhiyong Qiu Japan 24 1.8k 0.8× 928 0.6× 648 0.5× 633 0.5× 760 2.7× 74 2.3k
H.‐P. Schönherr Germany 24 1.8k 0.8× 696 0.5× 783 0.6× 777 0.6× 554 1.9× 78 2.3k
Hiroyuki Awano Japan 18 1.2k 0.5× 659 0.5× 634 0.4× 404 0.3× 353 1.2× 142 1.5k
Zhenchao Wen Japan 24 1.1k 0.4× 465 0.3× 867 0.6× 772 0.6× 232 0.8× 88 1.5k
Young‐Yeal Song United States 15 1.1k 0.4× 857 0.6× 702 0.5× 495 0.4× 227 0.8× 22 1.5k
Y. Roussigné France 21 1.5k 0.6× 538 0.4× 910 0.6× 445 0.4× 632 2.2× 118 1.8k
Erol Girt Canada 19 1.2k 0.5× 505 0.4× 654 0.5× 343 0.3× 406 1.4× 74 1.5k
Dennis R. Wilhoit United States 11 2.2k 0.9× 595 0.4× 1.5k 1.0× 679 0.6× 753 2.6× 14 2.5k
Chunhui Du United States 21 1.8k 0.7× 854 0.6× 681 0.5× 739 0.6× 624 2.2× 52 2.2k

Countries citing papers authored by Kohei Hamaya

Since Specialization
Citations

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

Fields of papers citing papers by Kohei Hamaya

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kohei Hamaya

This figure shows the co-authorship network connecting the top 25 collaborators of Kohei Hamaya. A scholar is included among the top collaborators of Kohei Hamaya 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 Kohei Hamaya. Kohei Hamaya is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Oki, K., Shigenori Ueda, Takamasa Usami, et al.. (2025). Room-temperature spin transport through band-to-band tunneling at semiconductor p-n junctions. Physical Review Applied. 23(5).
2.
Hamaya, Kohei, Koichiro Kawashima, T. Naito, et al.. (2025). Observation of intravalley spin scattering in a doped multivalley semiconductor. Physical review. B.. 111(8). 1 indexed citations
3.
Taniyama, Tomoyasu, Yoshihiro Gohda, Kohei Hamaya, & T. Kimura. (2024). Artificial multiferroic heterostructures—electric field effects and their perspectives. Science and Technology of Advanced Materials. 25(1). 2412970–2412970. 4 indexed citations
4.
Okabayashi, Jun, Takamasa Usami, Yûichi Murakami, et al.. (2024). Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics. NPG Asia Materials. 16(1). 6 indexed citations
5.
Yamada, M., Deepak Kumar, Takamasa Usami, et al.. (2024). Epitaxial growth of CoFe/Ge stacked structures on a perpendicularly magnetized MnGa alloy. Japanese Journal of Applied Physics. 64(1). 01SP06–01SP06.
6.
Usami, Takamasa, et al.. (2024). Artificial Control of Giant Converse Magnetoelectric Effect in Spintronic Multiferroic Heterostructure. Advanced Science. 12(7). e2413566–e2413566. 2 indexed citations
7.
Yamamoto, Keisuke, et al.. (2023). Electrical properties of a low-temperature fabricated Ge-based top-gate MOSFET structure with epitaxial ferromagnetic Heusler-alloy Schottky-tunnel source and drain. Materials Science in Semiconductor Processing. 167. 107763–107763. 5 indexed citations
8.
Usami, Takamasa, Yu Shiratsuchi, Takeshi Kanashima, et al.. (2023). Metastable Co3Mn/Fe/Pb(Mg1/3Nb2/3)O3–PbTiO3 multiferroic heterostructures. Journal of Applied Physics. 134(22). 1 indexed citations
9.
10.
Yamada, S., Masatoshi Kato, Shuhei Ichikawa, et al.. (2023). Half‐Metallic Heusler Alloy/GaN Heterostructure for Semiconductor Spintronics Devices. Advanced Electronic Materials. 9(7). 12 indexed citations
11.
Usami, Takamasa, Yu Shiratsuchi, S. Yamada, et al.. (2022). Giant converse magnetoelectric effect in a multiferroic heterostructure with polycrystalline Co2FeSi. NPG Asia Materials. 14(1). 22 indexed citations
12.
Tajiri, Hiroo, L. S. R. Kumara, Yuya Sakuraba, et al.. (2022). Structural insight using anomalous XRD into Mn2CoAl Heusler alloy films grown by magnetron sputtering, IBAS, and MBE techniques. Acta Materialia. 235. 118063–118063. 5 indexed citations
13.
Yamada, S., et al.. (2021). Substrate dependent reduction of Gilbert damping in annealed Heusler alloy thin films grown on group IV semiconductors. Applied Physics Letters. 119(17). 6 indexed citations
14.
Saerbeck, Thomas, Demie Kepaptsoglou, Quentin M. Ramasse, et al.. (2018). Magnetic and structural depth profiles of Heusler alloy Co2FeAl0.5Si0.5 epitaxial films on Si(1 1 1). Journal of Physics Condensed Matter. 30(6). 65801–65801. 4 indexed citations
15.
Yamada, S., et al.. (2018). Fe 2 VAl膜の電気的および熱電的特性に及ぼすFe-V非化学量論の影響. Japanese Journal of Applied Physics. 57(4). 1–40306. 1 indexed citations
16.
Ishikawa, M., Makoto Tsukahara, Syuta Honda, et al.. (2018). Crystal orientation effect on spin injection/detection efficiency in Si lateral spin-valve devices. Journal of Physics D Applied Physics. 52(8). 85102–85102. 2 indexed citations
17.
Kepaptsoglou, Demie, S. Yamada, Thomas Saerbeck, et al.. (2016). The role of chemical structure on the magnetic and electronic properties of Co2FeAl0.5Si0.5/Si(111) interface. Applied Physics Letters. 108(17). 13 indexed citations
18.
Ando, Yuichiro, et al.. (2010). 横方向に作製したFe 3 Si/Siスピンバルブデバイスにおける非局所および局所磁気抵抗信号の比較. Applied Physics Express. 3(9). 1–93001. 5 indexed citations
19.
Ando, Yuichiro, Kenji Kasahara, Yoshihisa Enomoto, et al.. (2010). Electrical Detection of Spin Transport in Si Using High-quality Fe3Si/Si Schottky Tunnel Contacts. Journal of the Magnetics Society of Japan. 34(3). 316–322. 3 indexed citations
20.
Hamaya, Kohei, Tomoyasu Taniyama, Y. Kitamoto, Toshiyuki Fujii, & Y. Yamazaki. (2005). Mixed Magnetic Phases in(Ga,Mn)AsEpilayers. Physical Review Letters. 94(14). 147203–147203. 32 indexed citations

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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