Ryoji Asahi

21.6k total citations · 6 hit papers
141 papers, 19.1k citations indexed

About

Ryoji Asahi is a scholar working on Materials Chemistry, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Ryoji Asahi has authored 141 papers receiving a total of 19.1k indexed citations (citations by other indexed papers that have themselves been cited), including 111 papers in Materials Chemistry, 55 papers in Electrical and Electronic Engineering and 26 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Ryoji Asahi's work include Advanced Thermoelectric Materials and Devices (28 papers), Chalcogenide Semiconductor Thin Films (21 papers) and Machine Learning in Materials Science (19 papers). Ryoji Asahi is often cited by papers focused on Advanced Thermoelectric Materials and Devices (28 papers), Chalcogenide Semiconductor Thin Films (21 papers) and Machine Learning in Materials Science (19 papers). Ryoji Asahi collaborates with scholars based in Japan, United States and Switzerland. Ryoji Asahi's co-authors include Takeshi Morikawa, Takeshi Ohwaki, Yasunori Taga, Koichi Aoki, W. Mannstadt, A. Nagoya, Hiroshi Irie, Georg Kresse, Ryosuke Jinnouchi and A. J. Freeman and has published in prestigious journals such as Science, Chemical Reviews and Proceedings of the National Academy of Sciences.

In The Last Decade

Ryoji Asahi

138 papers receiving 18.7k citations

Hit Papers

5 papers align trajectories

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 threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides

2001 10.9k citations Ryoji Asahi et al. profile →
Nitrogen-Doped Titanium Dioxide as Visible-Light-Sensitive Photocatalyst: Designs, Developments, and Prospects

2014 1.1k citations Ryoji Asahi et al. profile →
Optically Tunable Amino‐Functionalized Graphene Quantum Dots

2012 778 citations Ryoji Asahi, A. Nagoya et al. profile →
Electronic and optical properties of anataseTiO2

2000 656 citations Ryoji Asahi et al. profile →
Band-Gap Narrowing of Titanium Dioxide by Nitrogen Doping

2001 518 citations Ryoji Asahi et al. profile →
Electronic structure and physical properties of early transition metal mononitrides: Density-functional theory LDA, GGA, and screened-exchange LDA FLAPW calculations

2001 470 citations Ryoji Asahi et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Ryoji Asahi Japan	38	14.6k	12.1k	5.2k	1.6k	934	141	19.1k
John A. Turner United States	55	10.1k 0.7×	13.3k 1.1×	10.0k 1.9×	1.8k 1.1×	916 1.0×	196	19.3k
Yasunori Taga Japan	43	11.7k 0.8×	11.0k 0.9×	7.2k 1.4×	1.8k 1.1×	2.2k 2.3×	195	19.0k
Yi Yu China	62	10.6k 0.7×	5.6k 0.5×	9.9k 1.9×	1.7k 1.1×	1.1k 1.2×	258	18.0k
Naoya Shibata Japan	71	13.6k 0.9×	9.7k 0.8×	6.9k 1.3×	2.3k 1.5×	364 0.4×	439	20.4k
Toshiyuki Mori Japan	63	11.1k 0.8×	5.0k 0.4×	5.3k 1.0×	2.1k 1.3×	593 0.6×	459	15.7k
Wei‐Xue Li China	66	11.4k 0.8×	6.8k 0.6×	4.2k 0.8×	1.0k 0.6×	757 0.8×	280	17.1k
Ulrich Stimming Germany	71	9.9k 0.7×	11.6k 1.0×	11.7k 2.3×	1.7k 1.0×	1.1k 1.2×	286	20.8k
Wenhua Zhang China	59	8.7k 0.6×	8.4k 0.7×	4.8k 0.9×	1.2k 0.7×	515 0.6×	273	15.1k
Bo Song China	62	6.7k 0.5×	7.6k 0.6×	8.3k 1.6×	2.7k 1.7×	484 0.5×	337	15.1k
Guofeng Wang United States	73	9.0k 0.6×	17.0k 1.4×	12.5k 2.4×	2.1k 1.3×	557 0.6×	224	22.9k

Countries citing papers authored by Ryoji Asahi

Since Specialization

Citations

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

Fields of papers citing papers by Ryoji Asahi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoji Asahi

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Asahi, Ryoji, et al.. (2024). Topochemical Fluoride Exchange Reaction with Anionic Electrons toward Fluoride-Ion Conduction in Layered Ba_2–xA_xNF_1–x (A = Na, K). Chemistry of Materials. 36(11). 5671–5677. 2 indexed citations

Kutana, Alex, et al.. (2023). Machine learning and atomistic origin of high dielectric permittivity in oxides. Scientific Reports. 13(1). 22236–22236. 12 indexed citations

TERADA, T., Takafumi Ishibe, Nobuyasu Naruse, et al.. (2022). Seed-assisted epitaxy of intermetallic compounds with interface-determined orientation: Incommensurate Nowotny chimney-ladder FeGe epitaxial film. Acta Materialia. 236. 118130–118130. 3 indexed citations

Lee, Joohwi & Ryoji Asahi. (2022). Doping Effect and Li-Ion Conduction Mechanism of ALi₆XO₆ (A = K or Rb and X = Pentavalent): A First-Principles Study. The Journal of Physical Chemistry C. 126(32). 13548–13559. 1 indexed citations

Lee, Joohwi & Ryoji Asahi. (2021). Transfer learning for materials informatics using crystal graph convolutional neural network. Computational Materials Science. 190. 110314–110314. 57 indexed citations

Kajita, Seiji, Nobuko Ohba, Akitoshi Suzumura, Shin Tajima, & Ryoji Asahi. (2020). Discovery of superionic conductors by ensemble-scope descriptor. NPG Asia Materials. 12(1). 24 indexed citations

Lee, Joohwi, Nobuko Ohba, & Ryoji Asahi. (2020). Design Rules for High Oxygen-Ion Conductivity in Garnet-Type Oxides. Chemistry of Materials. 32(4). 1358–1370. 13 indexed citations

Miwa, Kazutoshi & Ryoji Asahi. (2020). Stationary interatomic force constant matrix method with ultrasoft pseudopotentials. Physical review. B.. 102(17). 6 indexed citations

Matsubara, Masato, Akitoshi Suzumura, Nobuko Ohba, & Ryoji Asahi. (2020). Identifying superionic conductors by materials informatics and high-throughput synthesis. Communications Materials. 1(1). 21 indexed citations

10.

Asahi, Ryoji, et al.. (2020). SC-CoMIcs: A Superconductivity Corpus for Materials Informatics. Language Resources and Evaluation. 6753–6760. 7 indexed citations

11.

Miwa, Kazutoshi & Ryoji Asahi. (2019). Path integral study on C15-type Laves TiCr2 hydride. International Journal of Hydrogen Energy. 44(42). 23708–23715. 10 indexed citations

12.

Lee, Joohwi, Nobuko Ohba, & Ryoji Asahi. (2019). Oxygen conduction mechanism in Ca3Fe2Ge3O12 garnet-type oxide. Scientific Reports. 9(1). 9 indexed citations

13.

Lee, Joohwi, Nobuko Ohba, & Ryoji Asahi. (2019). First-principles prediction of high oxygen-ion conductivity in trilanthanide gallates Ln₃GaO₆. Science and Technology of Advanced Materials. 20(1). 144–159. 8 indexed citations

14.

Lee, Joohwi, Nobuko Ohba, & Ryoji Asahi. (2018). Discovery of zirconium dioxides for the design of better oxygen-ion conductors using efficient algorithms beyond data mining. RSC Advances. 8(45). 25534–25545. 13 indexed citations

15.

Suzumura, Akitoshi, Hirofumi Hazama, Masato Matsubara, & Ryoji Asahi. (2018). Solar Thermal Cogeneration System Using a Cylindrical Thermoelectric Module. Journal of Electronic Materials. 48(1). 467–474. 3 indexed citations

16.

Miyamoto, Kaito & Ryoji Asahi. (2018). Cation Impact on Cobalt-Porphyrin Catalyzed Electrochemical Reduction of CO2. arXiv (Cornell University). 1 indexed citations

17.

Ohba, Nobuko, Shigenobu Ogata, Tomoyuki Tamura, Shunsuke Yamakawa, & Ryoji Asahi. (2011). A Hybrid Quantum-Classical Simulation Study on Stress-Dependence of Li Diffusivity in Graphite. Computer Modeling in Engineering & Sciences. 75(4). 247–266. 3 indexed citations

18.

Hazama, Hirofumi, et al.. (2010). Electronic Structure and Thermoelectric Properties of Si2Ti-Type Al-(Mn, X)-Si (X=Cr, Fe) Alloys. Journal of the Japan Institute of Metals and Materials. 74(9). 605–609. 2 indexed citations

19.

Asahi, Ryoji, et al.. (2009). 潜在的な光起電力材料としてのCu 2 ZnSnS 4 :ハイブリッドHartree-Fock密度汎関数理論研究. Physical Review B. 79(11). 1–115126. 1 indexed citations

20.

Mizutani, Uichiro, Ryoji Asahi, Hirokazu Sato, Tatsuo Noritake, & Tsunehiro Takeuchi. (2008). Failure of the Hume-Rothery stabilization mechanism in the Ag₅Li₈gamma-brass studied by first-principles FLAPW electronic structure calculations. Journal of Physics Condensed Matter. 20(27). 275228–275228. 20 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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