Koji Katayama

About

Koji Katayama is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Condensed Matter Physics. According to data from OpenAlex, Koji Katayama has authored 37 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Electrical and Electronic Engineering, 17 papers in Atomic and Molecular Physics, and Optics and 16 papers in Condensed Matter Physics. Recurrent topics in Koji Katayama’s work include GaN-based semiconductor devices and materials (16 papers), Semiconductor Quantum Structures and Devices (14 papers) and Semiconductor materials and devices (8 papers). Koji Katayama is often cited by papers focused on GaN-based semiconductor devices and materials (16 papers), Semiconductor Quantum Structures and Devices (14 papers) and Semiconductor materials and devices (8 papers). Koji Katayama collaborates with scholars based in Japan, United States and Egypt. Koji Katayama's co-authors include Takao Nakamura, Masaki Ueno, Takashi Kyono, Yusuke Yoshizumi, Masahiro Adachi, Yohei Enya, Shinji Tokuyama, Katsushi Akita, Takatoshi Ikegami and Takamichi Sumitomo and has published in prestigious journals such as Applied Physics Letters, PLoS ONE and Journal of Applied Physics.

In The Last Decade

Co-authorship network of co-authors of Koji Katayama

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

Fields of papers citing papers by Koji Katayama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Koji Katayama

Since Specialization

Citations

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

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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