Akira Usui

154 papers and 5.9k indexed citations i.

About

Akira Usui is a scholar working on Geochemistry and Petrology, Condensed Matter Physics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Akira Usui has authored 154 papers receiving a total of 5.9k indexed citations (citations by other indexed papers that have themselves been cited), including 63 papers in Geochemistry and Petrology, 50 papers in Condensed Matter Physics and 45 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Akira Usui’s work include Geochemistry and Elemental Analysis (63 papers), GaN-based semiconductor devices and materials (50 papers) and Semiconductor Quantum Structures and Devices (35 papers). Akira Usui is often cited by papers focused on Geochemistry and Elemental Analysis (63 papers), GaN-based semiconductor devices and materials (50 papers) and Semiconductor Quantum Structures and Devices (35 papers). Akira Usui collaborates with scholars based in Japan, United States and Sweden. Akira Usui's co-authors include Haruo Sunakawa, Akira Sakai, Atsushi Yamaguchi, Yoshio Takahashi, Michael Bau, Chiaki Sasaoka, James R. Hein, Teruhiko Kashiwabara, Matthew A. Marcus and Katja Schmidt and has published in prestigious journals such as Nature, Physical Review Letters and Applied Physics Letters.

In The Last Decade

Co-authorship network of co-authors of Akira Usui i

Fields of papers citing papers by Akira Usui

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Akira Usui

Since Specialization
Citations

This map shows the geographic impact of Akira Usui'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 Akira Usui with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Akira Usui 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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2025