Tadao Hashimoto

1.1k total citations · 1 hit paper
53 papers, 883 citations indexed

About

Tadao Hashimoto is a scholar working on Condensed Matter Physics, Electrical and Electronic Engineering and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Tadao Hashimoto has authored 53 papers receiving a total of 883 indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Condensed Matter Physics, 20 papers in Electrical and Electronic Engineering and 20 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Tadao Hashimoto's work include GaN-based semiconductor devices and materials (40 papers), Ga2O3 and related materials (20 papers) and Semiconductor materials and devices (15 papers). Tadao Hashimoto is often cited by papers focused on GaN-based semiconductor devices and materials (40 papers), Ga2O3 and related materials (20 papers) and Semiconductor materials and devices (15 papers). Tadao Hashimoto collaborates with scholars based in Japan, United States and Finland. Tadao Hashimoto's co-authors include James S. Speck, Shuji Nakamura, Feng Wu, Kenji Fujito, Kunio Tagawa, Makoto Saitô, P. Fini, Toshiharu Hase, Hiroshi Matsubara and B. A. Haskell and has published in prestigious journals such as Nature Materials, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Tadao Hashimoto

51 papers receiving 824 citations

Hit 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.

A GaN bulk crystal with improved structural quality grown by the ammonothermal method

2007 223 citations Tadao Hashimoto, Feng Wu et al. Nature Materials profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Tadao Hashimoto Japan	16	556	438	295	268	164	53	883
Yu Xu China	18	402 0.7×	436 1.0×	314 1.1×	292 1.1×	65 0.4×	66	954
P. A. Stampe United States	21	309 0.6×	898 2.1×	509 1.7×	387 1.4×	95 0.6×	45	1.2k
Guido Mula Italy	20	673 1.2×	648 1.5×	322 1.1×	662 2.5×	166 1.0×	69	1.4k
Guoqing Zhou China	18	348 0.6×	599 1.4×	219 0.7×	391 1.5×	111 0.7×	37	1.0k
Eiji Aoyagi Japan	15	189 0.3×	260 0.6×	302 1.0×	313 1.2×	145 0.9×	63	775
A. Yu. Nikiforov United States	16	297 0.5×	362 0.8×	209 0.7×	255 1.0×	70 0.4×	40	629
F. Hosseini Téhérani France	17	458 0.8×	860 2.0×	599 2.0×	363 1.4×	42 0.3×	85	1.1k
Benedikt Haas Germany	18	251 0.5×	595 1.4×	209 0.7×	372 1.4×	115 0.7×	59	994
M. Çakmak Türkiye	16	215 0.4×	427 1.0×	113 0.4×	453 1.7×	62 0.4×	105	893
I. Sveklo Poland	12	273 0.5×	273 0.6×	387 1.3×	142 0.5×	30 0.2×	64	760

Countries citing papers authored by Tadao Hashimoto

Since Specialization

Citations

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

Fields of papers citing papers by Tadao Hashimoto

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Tadao Hashimoto

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

All Works

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20 of 20 papers shown

Yoo, Jae‐Hyuck, Minkyu Cho, Theeradetch Detchprohm, et al.. (2025). Three-dimensional photoluminescence imaging of threading dislocations in GaN by sub-band optical excitation. Scientific Reports. 15(1). 333–333.

Cho, Minkyu, Jae‐Hyuck Yoo, Theeradetch Detchprohm, et al.. (2024). Breakdown characteristics analysis of kV-class vertical GaN PIN rectifiers by wafer-level sub-bandgap photoluminescence mapping. Journal of Applied Physics. 135(20). 2 indexed citations

Hashimoto, Tadao, et al.. (2023). Resistivity of manganese doped GaN grown by near equilibrium ammonothermal (NEAT) method. Journal of Crystal Growth. 621. 127364–127364. 3 indexed citations

Zhang, Yuxuan, et al.. (2023). 7.86 kV GaN-on-GaN PN power diode with BaTiO3 for electrical field management. Applied Physics Letters. 123(14). 6 indexed citations

Hashimoto, Tadao, et al.. (2022). Assessment of dislocation reduction on 100 mm diameter bulk GaN grown by the NEAT method. Japanese Journal of Applied Physics. 61(3). 30903–30903. 5 indexed citations

Hashimoto, Tadao, et al.. (2019). Two inch GaN substrates fabricated by the near equilibrium ammonothermal (NEAT) method. Japanese Journal of Applied Physics. 58(SC). SC1005–SC1005. 20 indexed citations

Hashimoto, Tadao, et al.. (2019). GaN Substrate development through the near equilibrium ammonothermal (NEAT) method and its application to higher performance GaN-based devices. 46–46. 1 indexed citations

Ji, Mi‐Hee, et al.. (2019). Structural and Electrical Characterization of 2” Ammonothermal Free-Standing GaN Wafers. Progress toward Pilot Production. Materials. 12(12). 1925–1925. 10 indexed citations

Hashimoto, Tadao, et al.. (2014). Ammonothermal Bulk GaN Growth and Its Processing. Sensors and Materials. 385–385. 5 indexed citations

10.

Hashimoto, Tadao, et al.. (2013). Current Status and Future Prospects of Ammonothermal Bulk GaN Growth. Sensors and Materials. 155–155. 7 indexed citations

11.

Hashimoto, Tadao, et al.. (2011). Improvement of structural quality in the initial stage of GaN growth by basic ammonothermal method. Journal of Crystal Growth. 317(1). 132–134. 2 indexed citations

12.

Hashimoto, Tadao, Feng Wu, James S. Speck, & Shuji Nakamura. (2008). Ammonothermal growth of bulk GaN. Journal of Crystal Growth. 310(17). 3907–3910. 48 indexed citations

13.

Hashimoto, Tadao, Feng Wu, James S. Speck, & Shuji Nakamura. (2007). A GaN bulk crystal with improved structural quality grown by the ammonothermal method. Nature Materials. 6(8). 568–571. 223 indexed citations breakdown →

14.

Hashimoto, Tadao, Makoto Saitô, Kenji Fujito, et al.. (2007). Seeded growth of GaN by the basic ammonothermal method. Journal of Crystal Growth. 305(2). 311–316. 24 indexed citations

15.

Hashimoto, Tadao, Kenji Fujito, Rajat Sharma, et al.. (2006). Phase selection of microcrystalline GaN synthesized in supercritical ammonia. Journal of Crystal Growth. 291(1). 100–106. 21 indexed citations

16.

Hashimoto, Tadao, Kenji Fujito, B. A. Haskell, et al.. (2004). Growth of gallium nitride via fluid transport in supercritical ammonia. Journal of Crystal Growth. 275(1-2). e525–e530. 38 indexed citations

17.

Hashimoto, Tadao, Masahiro Yoshimoto, Pablo O. Vaccaro, & Hiroyuki Matsunami. (1993). Reflection high-energy electron diffraction observation of surface reaction triggered by pulsed laser irradiation during GaP growth in chemical beam epitaxy. Applied Physics Letters. 63(15). 2097–2099. 1 indexed citations

18.

Ueda, Hirokazu, Tadao Hashimoto, Eisuke Furuya, et al.. (1988). Changes in Aerobic and Anaerobic ATP-Synthesizing Activities in Hypoxic Mouse Brain1. The Journal of Biochemistry. 104(1). 81–86. 14 indexed citations

19.

Konishi, Jin, Masafumi Yohda, Tadao Hashimoto, & Masasuke Yoshida. (1987). Single Site Catalysis of the F1-ATPase from Saccharomyces cerevisiae and the Effect of Inorganic Phosphate on It1. The Journal of Biochemistry. 102(2). 273–279. 7 indexed citations

20.

Hashimoto, Tadao, Yukuo Yoshida, & Kunio Tagawa. (1987). Binding Properties of 9K Protein to F1-ATPase: A Counterpart Ligand to the ATPase Inhibitor1. The Journal of Biochemistry. 102(4). 685–692. 11 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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