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Hiromichi Ohta

Hiromichi Ohta

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Materials Science
Japan
2022

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 75 3373 3256 140 137 597 39713

Hiromichi Ohta publications per year

The chart shows the history of publications by Hiromichi Ohta between 1975 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hiromichi Ohta published across 52 years, from 1975 to 2026, averaging 13.1 papers a year. Output peaked at 44 publications in 2004. 18 of the 679 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1975 to 2026. Vertical axis: number of publications, 0 to 44. Peak 44 publications in 2004. 1975: 1 publication 1976: 3 publications 1977: 2 publications 1978: 0 publications 1979: 1 publication 1980: 1 publication 1981: 0 publications 1982: 3 publications 1983: 1 publication 1984: 2 publications 1985: 4 publications 1986: 8 publications 1987: 8 publications 1988: 20 publications 1989: 12 publications 1990: 12 publications 1991: 6 publications 1992: 5 publications 1993: 4 publications 1994: 1 publication 1995: 2 publications 1996: 12 publications 1997: 8 publications 1998: 4 publications 1999: 7 publications 2000: 12 publications 2001: 12 publications 2002: 22 publications 2003: 19 publications 2004: 44 publications 2005: 26 publications 2006: 26 publications 2007: 34 publications 2008: 20 publications 2009: 17 publications 2010: 14 publications 2011: 7 publications 2012: 9 publications 2013: 7 publications 2014: 7 publications 2015: 7 publications 2016: 21 publications 2017: 24 publications 2018: 37 publications 2019: 42 publications 2020: 40 publications 2021: 38 publications 2022: 19 publications 2023: 15 publications 2024: 15 publications 2025: 17 publications 2026: 1 publication
1975 2026

679 publications in total across all disciplines

View publications per year as a table
Hiromichi Ohta: publications per year, 1975 to 2026
Year Publications
1975 1
1976 3
1977 2
1978 0
1979 1
1980 1
1981 0
1982 3
1983 1
1984 2
1985 4
1986 8
1987 8
1988 20
1989 12
1990 12
1991 6
1992 5
1993 4
1994 1
1995 2
1996 12
1997 8
1998 4
1999 7
2000 12
2001 12
2002 22
2003 19
2004 44
2005 26
2006 26
2007 34
2008 20
2009 17
2010 14
2011 7
2012 9
2013 7
2014 7
2015 7
2016 21
2017 24
2018 37
2019 42
2020 40
2021 38
2022 19
2023 15
2024 15
2025 17
2026 1
Total 679
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Hiromichi Ohta publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Hiromichi Ohta sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 57 bars. Horizontal axis: publications, 50–69 to 1,163+. Vertical axis: number of scientists, 0 to 891. Most scientists, 891, have 190–209 publications. The last bar groups every scientist with 1,163 publications or more. The highlighted bar, 590–609 publications, is where this scientist sits. 50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50–69 publications 1,163+

This scientist: 597 publications — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

View publications distribution as a table
Number of Materials Science scientists by publication count, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
Publications Scientists This scientist
50–69 28
70–89 152
90–109 356
110–129 487
130–149 723
150–169 835
170–189 850
190–209 891
210–229 862
230–249 766
250–269 726
270–289 665
290–309 593
310–329 537
330–349 477
350–369 440
370–389 356
390–409 321
410–429 256
430–449 246
450–469 216
470–489 212
490–509 174
510–529 194
530–549 162
550–569 131
570–589 111
590–609 103 597
610–629 99
630–649 77
650–669 92
670–689 56
690–709 53
710–729 53
730–749 38
750–769 52
770–789 43
790–809 38
810–829 34
830–849 25
850–869 18
870–889 20
890–909 24
910–929 27
930–949 20
950–969 17
970–989 10
990–1,009 16
1,010–1,029 13
1,030–1,049 12
1,050–1,069 9
1,070–1,089 8
1,090–1,109 7
1,110–1,129 9
1,130–1,149 2
1,150–1,162 5
1,163+ 100
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Hiromichi Ohta D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Hiromichi Ohta sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 64 bars. Horizontal axis: D-Index, 40–41 to 165+. Vertical axis: number of scientists, 0 to 667. Most scientists, 667, have 52–53 D-Index. The last bar groups every scientist with 165 D-Index or more. The highlighted bar, 74–75 D-Index, is where this scientist sits. 40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40–41 D-Index 165+

This scientist: 75 D-Index — 74th percentile

74% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

View D-Index distribution as a table
Number of Materials Science scientists by D-index, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
D-Index Scientists This scientist
40–41 211
42–43 450
44–45 612
46–47 612
48–49 598
50–51 657
52–53 667
54–55 621
56–57 597
58–59 610
60–61 587
62–63 606
64–65 533
66–67 490
68–69 469
70–71 378
72–73 421
74–75 359 75
76–77 323
78–79 299
80–81 230
82–83 210
84–85 195
86–87 203
88–89 175
90–91 175
92–93 142
94–95 121
96–97 117
98–99 107
100–101 88
102–103 85
104–105 68
106–107 62
108–109 57
110–111 45
112–113 49
114–115 50
116–117 34
118–119 38
120–121 37
122–123 29
124–125 28
126–127 24
128–129 33
130–131 28
132–133 21
134–135 20
136–137 23
138–139 17
140–141 12
142–143 17
144–145 21
146–147 13
148–149 11
150–151 14
152–153 13
154–155 9
156–157 10
158–159 7
160–161 4
162–163 4
164 3
165+ 98
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Research.com Recognitions

  • 2022 - Research.com Materials Science in Japan Leader Award

Overview

Hiromichi Ohta is affiliated with Hokkaido University in Japan, focusing primarily on the fields of Materials Science and Engineering. Their research spans several interconnected subfields including Materials Chemistry, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Polymers and Plastics, and Condensed Matter Physics.

Their work addresses a range of topics with an emphasis on the electronic and structural properties of oxides, advanced thermoelectric materials and devices, ZnO doping and properties, magnetic and transport properties of perovskites and related materials, transition metal oxide nanomaterials, ferroelectric and piezoelectric materials, and thermal properties of materials.

Ohta's contributions are published frequently in several specialized venues. The most common publication venues include:

  • ACS Applied Electronic Materials
  • ACS Applied Materials & Interfaces
  • ECS Meeting Abstracts
  • Journal of the Ceramic Society of Japan
  • Nano Letters

Recent notable papers authored or co-authored by Ohta include:

  • Thermoelectric properties of a semicrystalline polymer doped beyond the insulator-to-metal transition by electrolyte gating, 2020, Science Advances
  • High electrical conducting deep-ultraviolet-transparent oxide semiconductor La-doped SrSnO3 exceeding similar to 3000 S cm(-1), 2020, Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University)
  • Ceramic science of crystal defect cores, 2022, Journal of the Ceramic Society of Japan
  • Atomistic Origin of Li-Ion Conductivity Reduction at (Li3xLa2/3-x)TiO3 Grain Boundary, 2021, Nano Letters
  • Phase Instability amid Dimensional Crossover in Artificial Oxide Crystal, 2020, Physical Review Letters

Ohta collaborates extensively with other researchers. Frequent co-authors include Hai Jun Cho, Yuichi Ikuhara, Bin Feng, Yuqiao Zhang, and Yasutaka Matsuo.

Best Publications

  • Room-temperature fabrication of transparent flexible thin-film transistors using amorphous oxide semiconductors

    Kenji Nomura;Hiromichi Ohta;Akihiro Takagi;Toshio Kamiya

  • Thin-Film Transistor Fabricated in Single-Crystalline Transparent Oxide Semiconductor

    Kenji Nomura;Hiromichi Ohta;Kazushige Ueda;Toshio Kamiya

  • Amorphous Oxide Semiconductors for High-Performance Flexible Thin-Film Transistors

    Kenji Nomura;Akihiro Takagi;Toshio Kamiya;Hiromichi Ohta

  • Deep-ultraviolet transparent conductive β-Ga2O3 thin films

    Masahiro Orita;Hiromichi Ohta;Masahiro Hirano;Hideo Hosono

  • Carrier transport in transparent oxide semiconductor with intrinsic structural randomness probed using single-crystalline InGaO3(ZnO)5 films

    Kenji Nomura;Toshio Kamiya;Hiromichi Ohta;Kazushige Ueda

  • Giant thermoelectric Seebeck coefficient of a two-dimensional electron gas in SrTiO3

    Hiromichi Ohta;Hiromichi Ohta;SungWng Kim;Yoriko Mune;Teruyasu Mizoguchi

  • Amorphous transparent conductive oxide InGaO3(ZnO)m (m≤ 4): a Zn4s conductor

    M. Orita;H. Ohta;M. Hirano;S. Narushima

  • High-temperature carrier transport and thermoelectric properties of heavily La- or Nb-doped SrTiO3 single crystals

    Shingo Ohta;Takashi Nomura;Hiromichi Ohta;Kunihito Koumoto

  • Current injection emission from a transparent p–n junction composed of p-SrCu2O2/n-ZnO

    Hiromichi Ohta;Ken-ichi Kawamura;Masahiro Orita;Masahiro Hirano

  • Epitaxial growth of transparent p-type conducting CuGaO2 thin films on sapphire (001) substrates by pulsed laser deposition

    K. Ueda;T. Hase;H. Yanagi;H. Kawazoe

  • Fabrication and photoresponse of a pn-heterojunction diode composed of transparent oxide semiconductors, p-NiO and n-ZnO

    Hiromichi Ohta;Masahiro Hirano;Ken Nakahara;Hideaki Maruta

  • Carrier transport and electronic structure in amorphous oxide semiconductor, a-InGaZnO4

    Akihiro Takagi;Kenji Nomura;Hiromichi Ohta;Hiromichi Ohta;Hiroshi Yanagi

  • Reversible redox reactions in an epitaxially stabilized SrCoO(x) oxygen sponge.

    Hyoungjeen Jeen;Woo Seok Choi;Michael D. Biegalski;Chad M. Folkman

  • Transparent Oxide Optoelectronics

    Hiromichi Ohta;Hideo Hosono

  • Large thermoelectric performance of heavily Nb-doped SrTiO3 epitaxial film at high temperature

    Shingo Ohta;Takashi Nomura;Hiromichi Ohta;Masahiro Hirano

  • Defect passivation and homogenization of amorphous oxide thin-film transistor by wet O2 annealing

    Kenji Nomura;Toshio Kamiya;Hiromichi Ohta;Masahiro Hirano

  • Recent Progress in Oxide Thermoelectric Materials: p-Type Ca3Co4O9 and n-Type SrTiO3−

    Hiromichi Ohta;Kenji Sugiura;Kunihito Koumoto

  • Highly electrically conductive indium–tin–oxide thin films epitaxially grown on yttria-stabilized zirconia (100) by pulsed-laser deposition

    Hiromichi Ohta;Masahiro Orita;Masahiro Hirano;Hiroaki Tanji

  • Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen sponge

    Hyoungjeen Jeen;Woo Seok Choi;Michael D. Biegalski;Chad M. Folkman

  • Preparation of highly conductive, deep ultraviolet transparent β-Ga2O3 thin film at low deposition temperatures

    Masahiro Orita;Hidenori Hiramatsu;Hiromichi Ohta;Masahiro Hirano

Frequent Co-Authors

Hideo Hosono
Hideo Hosono Tokyo Institute of Technology
Masahiro Hirano
Masahiro Hirano Tokyo Institute of Technology
Kunihito Koumoto
Kunihito Koumoto Nagoya University
Yuichi Ikuhara
Yuichi Ikuhara University of Tokyo
Toshio Kamiya
Toshio Kamiya Tokyo Institute of Technology
Kenji Nomura
Kenji Nomura University of California, San Diego
Hidenori Hiramatsu
Hidenori Hiramatsu Tokyo Institute of Technology
Kazushige Ueda
Kazushige Ueda Kyushu Institute of Technology
Hiroshi Yanagi
Hiroshi Yanagi University of Yamanashi
Sung Wng Kim
Sung Wng Kim Sungkyunkwan University

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