Ryohei Sumii

703 total citations
24 papers, 575 citations indexed

About

Ryohei Sumii is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Materials Chemistry. According to data from OpenAlex, Ryohei Sumii has authored 24 papers receiving a total of 575 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Electrical and Electronic Engineering, 10 papers in Atomic and Molecular Physics, and Optics and 10 papers in Materials Chemistry. Recurrent topics in Ryohei Sumii's work include Molecular Junctions and Nanostructures (12 papers), Graphene research and applications (8 papers) and Fullerene Chemistry and Applications (6 papers). Ryohei Sumii is often cited by papers focused on Molecular Junctions and Nanostructures (12 papers), Graphene research and applications (8 papers) and Fullerene Chemistry and Applications (6 papers). Ryohei Sumii collaborates with scholars based in Japan, United States and Mexico. Ryohei Sumii's co-authors include Kenta Amemiya, S. Wada, Kenichiro Tanaka, Kazuhiko Seki, Yukio Ouchi, Hiroyuki Yamane, T. Sekitani, Kaname Kanai, Daisuke Yoshimura and Nobuo Ueno and has published in prestigious journals such as Applied Physics Letters, Physical Review B and The Journal of Physical Chemistry C.

In The Last Decade

Ryohei Sumii

23 papers receiving 570 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryohei Sumii Japan 13 311 295 250 85 68 24 575
Shinjiro Yagyu Japan 12 207 0.7× 352 1.2× 188 0.8× 90 1.1× 22 0.3× 69 598
S. A. Gorovikov Germany 11 332 1.1× 142 0.5× 311 1.2× 52 0.6× 45 0.7× 22 600
Thomas Ules Austria 16 312 1.0× 412 1.4× 467 1.9× 230 2.7× 56 0.8× 24 736
Tomochika Matsuyama Japan 13 181 0.6× 251 0.9× 154 0.6× 37 0.4× 94 1.4× 56 510
B. Sjögren Sweden 14 197 0.6× 503 1.7× 152 0.6× 79 0.9× 101 1.5× 17 765
L. Moro Italy 14 308 1.0× 365 1.2× 216 0.9× 60 0.7× 131 1.9× 32 653
Josette Rivory France 10 311 1.0× 157 0.5× 130 0.5× 87 1.0× 18 0.3× 20 472
Shinichi Machida Japan 17 256 0.8× 588 2.0× 213 0.9× 84 1.0× 65 1.0× 32 731
Andrew O. F. Jones Austria 15 374 1.2× 443 1.5× 139 0.6× 115 1.4× 90 1.3× 32 814
H. Neergaard Waltenburg Denmark 7 429 1.4× 316 1.1× 374 1.5× 88 1.0× 38 0.6× 8 684

Countries citing papers authored by Ryohei Sumii

Since Specialization
Citations

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

Fields of papers citing papers by Ryohei Sumii

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryohei Sumii

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

All Works

20 of 20 papers shown
1.
Tanaka, Takaaki, Go Makimoto, Ryohei Sumii, et al.. (2025). Remarkable Efficacy of Capmatinib in a Patient with Cancer of Unknown Primary with <i>MET</i> Amplification. Internal Medicine. 64(23). 3460–3464.
2.
Miyazaki, Takafumi, Ryohei Sumii, Haruya Okimoto, et al.. (2014). Ultraviolet photoelectron spectra of Ce2@C80 and La2@C80. Chemical Physics. 447. 71–75. 8 indexed citations
3.
Miyazaki, Takafumi, et al.. (2014). Surface electronic structures of lithium nickel oxide solid solutions: selective methane oxidation. Research on Chemical Intermediates. 41(10). 7405–7412. 1 indexed citations
4.
Miyazaki, Takafumi, et al.. (2014). Photoelectron spectra of thulium atoms encapsulated C82 fullerene, Tm2@C82 (III) and Tm2C2@C82 (III). Chemical Physics. 431-432. 47–50. 6 indexed citations
5.
Miyazaki, Takafumi, Ryohei Sumii, Haruya Okimoto, et al.. (2012). Ultraviolet photoelectron spectra of Er2@C82 (I), Er2@C82 (III), Er2C2@C82 (I) and Er2C2@C82 (III). Chemical Physics. 397. 87–91. 17 indexed citations
6.
Kiguchi, Manabu, Kazuyuki Takai, V. L. Joseph Joly, et al.. (2011). Magnetic edge state and dangling bond state of nanographene in activated carbon fibers. Physical Review B. 84(4). 33 indexed citations
7.
Amemiya, Kenta, Masaaki Yoshida, Hitoshi Abe, et al.. (2011). Real-time observation of CO oxidation reaction on Ir(111) surface at 33 ms resolution by means of wavelength-dispersive near-edge x-ray absorption fine structure spectroscopy. Applied Physics Letters. 99(7). 12 indexed citations
8.
Hino, Shojun, Yusuke Aoki, Takafumi Miyazaki, et al.. (2011). Photoelectron Spectroscopy of Sc3N@C78. The Journal of Physical Chemistry C. 116(1). 165–170. 4 indexed citations
9.
Joly, V. L. Joseph, Manabu Kiguchi, Kazuyuki Takai, et al.. (2010). Observation of magnetic edge state in graphene nanoribbons. Physical Review B. 81(24). 119 indexed citations
10.
Miyazaki, Takafumi, Ryohei Sumii, Haruya Okimoto, et al.. (2010). Ultraviolet photoelectron spectra of mono-metal endohedral fullerene Er@C82 (I). Chemical Physics. 378(1-3). 11–13. 8 indexed citations
11.
Amemiya, Kenta, Akio Toyoshima, Takashi Kikuchi, et al.. (2010). Commissioning of a Soft X-ray Beamline PF-BL-16A with a Variable-Included-Angle Varied-Line-Spacing Grating Monochromator. AIP conference proceedings. 295–298. 59 indexed citations
12.
Hino, Shojun, Takafumi Miyazaki, Yusuke Aoki, et al.. (2009). Electronic Structure of Yttrium and Carbon Atoms Encapsulated Metallofullerenes, Y2C2@C82: Ultraviolet Photoelectron Spectroscopy and Theoretical Calculation. Bulletin of the Chemical Society of Japan. 82(8). 963–967. 7 indexed citations
13.
Yamane, Hiroyuki, Ryohei Sumii, Kenji Koizumi, et al.. (2008). A role of metal d-band in the interfacial electronic structure at organic/metal interface: PTCDA on Au, Ag and Cu. Organic Electronics. 9(5). 783–789. 21 indexed citations
14.
Yamane, Hiroyuki, Daisuke Yoshimura, Ryohei Sumii, et al.. (2007). Electronic structure at highly ordered organic/metal interfaces: Pentacene on Cu(110). Physical Review B. 76(16). 90 indexed citations
15.
Wada, S., et al.. (2006). Selective chemical bond breaking characteristically induced by resonant core excitation of ester compounds on a surface. Journal of Physics Condensed Matter. 18(30). S1629–S1653. 27 indexed citations
16.
Tanaka, Kenichiro, et al.. (2006). Atomic position dependence of the primary core electron excitation on site-specific chemical bond scission. Radiation Physics and Chemistry. 75(11). 2076–2079. 13 indexed citations
17.
Wada, S., Ryohei Sumii, Yoichi Iizuka, et al.. (2005). Ion desorption of surface-oriented methyl-ester compounds using a self-assembled monolayer by core-electron excitations: Polarization-dependence measurements. Surface Science. 593(1-3). 283–290. 3 indexed citations
18.
Sekitani, T., et al.. (2004). Study of adsorption structure of benzene and toluene on Si(111)7×7 surfaces. Surface Science. 566-568. 664–670. 19 indexed citations
19.
Wada, S., et al.. (2003). Active control of chemical bond scission by site-specific core excitation. Surface Science. 528(1-3). 242–248. 43 indexed citations
20.
Sumii, Ryohei, et al.. (2000). Study of aniline on a Si(111)7×7 surface by scanning tunneling microscopy. Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena. 18(5). 2335–2338. 12 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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