Itsuo Umebu

852 total citations
46 papers, 664 citations indexed

About

Itsuo Umebu is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, Itsuo Umebu has authored 46 papers receiving a total of 664 indexed citations (citations by other indexed papers that have themselves been cited), including 43 papers in Atomic and Molecular Physics, and Optics, 39 papers in Electrical and Electronic Engineering and 7 papers in Materials Chemistry. Recurrent topics in Itsuo Umebu's work include Semiconductor Quantum Structures and Devices (40 papers), Advanced Semiconductor Detectors and Materials (18 papers) and Semiconductor materials and interfaces (10 papers). Itsuo Umebu is often cited by papers focused on Semiconductor Quantum Structures and Devices (40 papers), Advanced Semiconductor Detectors and Materials (18 papers) and Semiconductor materials and interfaces (10 papers). Itsuo Umebu collaborates with scholars based in Japan and United Kingdom. Itsuo Umebu's co-authors include Osamu Ueda, M. Takikawa, J. Komeno, P.N. Robson, Anwesha Choudhury, Satoshi Komiya, Shigenobu Yamakoshi, Tsuyoshi Kotani, Akio Yamaguchi and T. Sanada and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and IEEE Transactions on Microwave Theory and Techniques.

In The Last Decade

Itsuo Umebu

44 papers receiving 624 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Itsuo Umebu Japan 14 525 520 129 53 45 46 664
Toyoshi Yamaoka Japan 16 548 1.0× 362 0.7× 103 0.8× 141 2.7× 25 0.6× 41 667
V. Diadiuk United States 14 551 1.0× 460 0.9× 89 0.7× 89 1.7× 20 0.4× 37 715
D. A. Vinokurov Russia 16 663 1.3× 624 1.2× 94 0.7× 91 1.7× 17 0.4× 73 799
R. Staske Germany 15 777 1.5× 592 1.1× 59 0.5× 48 0.9× 26 0.6× 53 848
D. T. Cheung United States 14 660 1.3× 447 0.9× 163 1.3× 13 0.2× 17 0.4× 42 724
W. V. McLevige United States 18 852 1.6× 508 1.0× 92 0.7× 28 0.5× 63 1.4× 51 924
J. L. Johnson United States 11 619 1.2× 286 0.6× 397 3.1× 30 0.6× 12 0.3× 24 699
T. J. de Lyon United States 19 937 1.8× 738 1.4× 215 1.7× 99 1.9× 26 0.6× 53 1.0k
Parvez N. Uppal United States 10 381 0.7× 305 0.6× 87 0.7× 47 0.9× 10 0.2× 40 472
H. F. Lockwood United States 17 736 1.4× 642 1.2× 109 0.8× 57 1.1× 58 1.3× 41 914

Countries citing papers authored by Itsuo Umebu

Since Specialization
Citations

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

Fields of papers citing papers by Itsuo Umebu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Itsuo Umebu

This figure shows the co-authorship network connecting the top 25 collaborators of Itsuo Umebu. A scholar is included among the top collaborators of Itsuo Umebu 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 Itsuo Umebu. Itsuo Umebu 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.
Umebu, Itsuo. (1993). A proposal of a method for analysing the leakage characteristics of 1.3 mu m semiconductor buried heterostructure lasers. Semiconductor Science and Technology. 8(1). 63–66. 2 indexed citations
2.
Nakamura, T., et al.. (1990). Scanning tunneling microscopy of chemical vapor deposition grown BiSrCaCuO films. Journal of Vacuum Science & Technology A Vacuum Surfaces and Films. 8(1). 472–474. 2 indexed citations
3.
Ueda, Osamu, Kenta Nakai, Shigenobu Yamakoshi, & Itsuo Umebu. (1988). Transmission Electron Microscopic Study of Precipitates in Fe-Doped InP Crystals Grown by Metalorganic Vapor Phase Epitaxy. MRS Proceedings. 138. 3 indexed citations
4.
Ueda, Osamu, M. Takikawa, Masaru Takechi, J. Komeno, & Itsuo Umebu. (1988). Transmission electron microscopic observation of InGaP crystals grown on (001)GaAs substrates by metalorganic chemical vapor deposition. Journal of Crystal Growth. 93(1-4). 418–425. 48 indexed citations
5.
Umebu, Itsuo, et al.. (1987). MULTIPLE CHARACTERIZATION OF STRUCTURAL PERFECTION IN GaAs/AlAs SUPERLATTICE. Le Journal de Physique Colloques. 48(C5). C5–41. 1 indexed citations
6.
Ueda, Osamu, M. Takikawa, J. Komeno, & Itsuo Umebu. (1987). Atomic Structure of Ordered InGaP Crystals Grown on (001)GaAs Substrates by Metalorganic Chemical Vapor Deposition. Japanese Journal of Applied Physics. 26(11A). L1824–L1824. 101 indexed citations
7.
Komiya, Satoshi, Akio Yamaguchi, & Itsuo Umebu. (1986). Characterization of radiative efficiency in double heterostructures of InGaAsP/InP by photoluminescence intensity analysis. Solid-State Electronics. 29(2). 235–240. 5 indexed citations
8.
Ikeda, Masao, Osamu Ueda, Satoshi Komiya, & Itsuo Umebu. (1985). Thermal strain-induced degradation mechanism in the visible AlGaAs/GaAs laser. Journal of Applied Physics. 58(7). 2448–2452. 6 indexed citations
9.
Ueda, Osamu, K. Wakao, Satoshi Komiya, et al.. (1985). Catastrophic degradation of InGaAsP/InGaP double-heterostructure lasers grown on (001) GaAs substrates by liquid-phase epitaxy. Journal of Applied Physics. 58(11). 3996–4002. 29 indexed citations
10.
Komiya, Satoshi, Toshiyuki Tanahashi, & Itsuo Umebu. (1985). Thermal Degradation of InP/InGaAsP/InP DH Structure. Japanese Journal of Applied Physics. 24(8R). 1053–1053. 2 indexed citations
11.
Ueda, Osamu, Hiroshi Ishikawa, & Itsuo Umebu. (1984). Transmission Electron Microscope Study of Defects in Cd-Diffused n-InP Substrates. Japanese Journal of Applied Physics. 23(12R). 1551–1551. 1 indexed citations
12.
Nakajima, Kazuo, Susumu Yamazaki, & Itsuo Umebu. (1984). A New Growth Method Using Source Current Control to Supply Solute Elements-Demonstration of In1-xGaxAs Case. Japanese Journal of Applied Physics. 23(1A). L26–L26. 13 indexed citations
13.
Tanahashi, Toshiyuki, et al.. (1983). Deformation of V-grooves on InP substrate by heat treatment. Journal of Crystal Growth. 64(3). 492–498. 7 indexed citations
14.
Ueda, Osamu, Itsuo Umebu, & Tsuyoshi Kotani. (1983). Transmission electron microscopic observation of defects in heavily doped LPE InGaAsP layers with Zn, Cd, Sn and Te. Journal of Crystal Growth. 62(2). 329–342. 14 indexed citations
15.
Ueda, Osamu, S. Isozumi, Satoshi Komiya, T. Kusunoki, & Itsuo Umebu. (1983). Tem Observation of defects in InGaAsP and InGaP Crystals on GaAs Substrates Grown by Liquid Phase Epitaxy. MRS Proceedings. 31. 2 indexed citations
16.
Tanahashi, Toshiyuki, Kazuo Nakajima, Akio Yamaguchi, & Itsuo Umebu. (1983). Electrical properties of undoped and Si-doped Al0.48In0.52As grown by liquid phase epitaxy. Applied Physics Letters. 43(11). 1030–1032. 14 indexed citations
17.
Ueda, Osamu, Satoshi Komiya, Shigenobu Yamakoshi, Itsuo Umebu, & Kenzo Akita. (1983). Comparison of Defect Formation in InGaAsP/InP and GaAlAs/GaAs. Japanese Journal of Applied Physics. 22(S1). 243–243. 7 indexed citations
18.
Ueda, Osamu, Itsuo Umebu, Shigenobu Yamakoshi, & Tsuyoshi Kotani. (1982). Nature of dark defects revealed in InGaAsP/InP double heterostructure light emitting diodes aged at room temperature. Journal of Applied Physics. 53(4). 2991–2997. 21 indexed citations
19.
Komiya, Satoshi, Kazuo Nakajima, Itsuo Umebu, & Kenzo Akita. (1982). Dependence of Rocking Curve for Thin In1-xGaxAs1-yPy Layer on Thickness in a Symmetric Bragg Case. Japanese Journal of Applied Physics. 21(9R). 1313–1313. 8 indexed citations
20.
Ueda, Osamu, Shigenobu Yamakoshi, T. Sanada, et al.. (1982). Mechanism of catastrophic degradation in InGaAsP/InP double-heterostructure light emitting diodes and GaAlAs double-heterostructure light emitting diodes applied with pulsed large current. Journal of Applied Physics. 53(12). 9170–9179. 13 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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