Akira Usui
Impact in
- Geochemistry and Petrology top 0.05%
- Geochemistry and Elemental Analysis
- Condensed Matter Physics top 0.5%
- GaN-based semiconductor devices and materials
Papers in
-
- Geochemistry and Elemental Analysis 66
-
- GaN-based semiconductor devices and materials 51
- Co-authors
- Haruo Sunakawa (28 shared papers)Akira Sakai (9 shared papers)Atsushi Yamaguchi (14 shared papers)Yoshio Takahashi (8 shared papers)Michael Bau (3 shared papers)Chiaki Sasaoka (14 shared papers)James R. Hein (4 shared papers)Andrea Koschinsky (1 shared paper)
- Journals
- Japanese Journal of Applied Physics (21 papers)Applied Physics Letters (15 papers)Journal of Crystal Growth (11 papers)Geochimica et Cosmochimica Acta (10 papers)Marine Geology (10 papers)
- Partner nations
- JapanUnited StatesSweden
In The Last Decade
Akira Usui
163 papers receiving 5.9k citations
Akira Usui's Hit Papers
Peers
Comparison fields: 5 of 87
- Geochemistry and Petrology 2.4k
- Condensed Matter Physics 2.2k
- Paleontology 909
- Geophysics 1.0k
- Inorganic Chemistry 790
Countries citing papers authored by Akira Usui
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).
Fields of papers citing papers by Akira Usui
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.
Co-authors
The 25 scholars most cited alongside Akira Usui, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 163 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | Thick GaN Epitaxial Growth with Low Dislocation Density by Hydride Vapor Phase Epitaxy Hit paper breakdown → | 1997 | 773 |
| 2 | Discriminating between different genetic types of marine ferro-manganese crusts and nodules based on rare earth elements and yttrium Hit paper breakdown → | 2014 | 443 |
| 3 | 1997 | 337 | |
| 4 | 2007 | 263 | |
| 5 | 1998 | 184 | |
| 6 | 1996 | 161 | |
| 7 | 2000 | 146 | |
| 8 | 2011 | 138 | |
| 9 | 2013 | 104 | |
| 10 | 2007 | 101 | |
| 11 | 1993 | 98 | |
| 12 | 2014 | 93 | |
| 13 | 1986 | 92 | |
| 14 | 2016 | 90 | |
| 15 | 1999 | 88 | |
| 16 | 1989 | 82 | |
| 17 | 1998 | 76 | |
| 18 | 1998 | 71 | |
| 19 | 1986 | 70 | |
| 20 | 2011 | 66 |
About Akira Usui
Akira Usui is a scholar working on Geochemistry and Petrology, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry, having authored 163 papers that have together received 6.1k indexed citations. Recurring topics across this work include Geochemistry and Elemental Analysis (66 papers), GaN-based semiconductor devices and materials (51 papers), Semiconductor Quantum Structures and Devices (36 papers), Semiconductor materials and devices (28 papers), Paleontology and Stratigraphy of Fossils (24 papers), Geology and Paleoclimatology Research (23 papers), Radioactive element chemistry and processing (21 papers) and ZnO doping and properties (20 papers). The work is most often cited by research in Geochemistry and Petrology (2.4k citations), Condensed Matter Physics (2.2k citations), Paleontology (909 citations), Geophysics (1.0k citations) and Inorganic Chemistry (790 citations). Akira Usui has collaborated with scholars based in Japan, United States and Sweden. Frequent co-authors include Haruo Sunakawa, Akira Sakai, Atsushi Yamaguchi, Yoshio Takahashi, Michael Bau, Chiaki Sasaoka, James R. Hein, Andrea Koschinsky, Katja Schmidt and Thomas Kühn. Their work appears in journals such as Japanese Journal of Applied Physics, Applied Physics Letters, Journal of Crystal Growth, Geochimica et Cosmochimica Acta and Marine Geology.
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.