Masayoshi Koike

114 total papers · 2.6k total citations
71 papers, 2.1k citations indexed

About

Masayoshi Koike is a scholar working on Condensed Matter Physics, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Masayoshi Koike has authored 71 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Condensed Matter Physics, 28 papers in Electrical and Electronic Engineering and 24 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Masayoshi Koike's work include GaN-based semiconductor devices and materials (36 papers), Semiconductor Quantum Structures and Devices (20 papers) and Ga2O3 and related materials (19 papers). Masayoshi Koike is often cited by papers focused on GaN-based semiconductor devices and materials (36 papers), Semiconductor Quantum Structures and Devices (20 papers) and Ga2O3 and related materials (19 papers). Masayoshi Koike collaborates with scholars based in Japan, South Korea and United States. Masayoshi Koike's co-authors include Hiroshi Amano, Isamu Akasaki, Toshiyuki Tanaka, S. Sota, Hiroshi Sakai, S. Yamasaki, Naoki Shibata, S. Nagai, Hisaki Kato and Yumiko Takahashi and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Journal of The Electrochemical Society.

In The Last Decade

Masayoshi Koike

69 papers receiving 2.0k citations

Hit Papers

Shortest wavelength semic... 1994 2026 2004 2015 1996 1994 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation benchmark for papers published in the same subfield and year, or reaches the top citation threshold in at least one of its specific research topics.

  1. Shortest wavelength semiconductor laser diode
    1996 396 citations Isamu Akasaki, S. Sota et al. Electronics Letters profile →
  2. p-type conduction in Mg-doped GaN and Al0.08Ga0.92N grown by metalorganic vapor phase epitaxy
    1994 211 citations Toshiyuki Tanaka, A. Watanabe et al. Applied Physics Letters profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Masayoshi Koike 1.6k 844 817 727 690 71 2.1k
Kazunobu Kojima 1.7k 1.0× 845 1.0× 1.1k 1.3× 910 1.3× 609 0.9× 175 2.4k
R.L. Henry 1.3k 0.8× 665 0.8× 1.1k 1.3× 723 1.0× 779 1.1× 93 2.2k
H. Obloh 1.7k 1.0× 751 0.9× 1.0k 1.3× 940 1.3× 1.4k 2.0× 66 2.6k
Ryan McClintock 1.4k 0.8× 615 0.7× 938 1.1× 1.2k 1.7× 859 1.2× 92 2.4k
Gregory A. Garrett 1.3k 0.8× 599 0.7× 422 0.5× 858 1.2× 732 1.1× 70 1.9k
Y. Samson 1.1k 0.7× 1.9k 2.3× 638 0.8× 1.2k 1.7× 956 1.4× 76 2.9k
Yoshiyuki Yamamoto 904 0.6× 596 0.7× 827 1.0× 924 1.3× 1.5k 2.1× 129 2.4k
X. D. Wu 1.4k 0.9× 430 0.5× 717 0.9× 844 1.2× 1.4k 2.1× 80 2.5k
W. Zander 1.1k 0.7× 741 0.9× 1.1k 1.4× 582 0.8× 824 1.2× 122 2.4k
A. V. Lunev 1.3k 0.8× 795 0.9× 871 1.1× 790 1.1× 735 1.1× 55 2.0k

Countries citing papers authored by Masayoshi Koike

Since Specialization
Citations

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

Fields of papers citing papers by Masayoshi Koike

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masayoshi Koike

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

All Works

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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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2026