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Kazuhiko Hirakawa

Kazuhiko Hirakawa

University of Tokyo
Japan

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 43 12282 11876 771 735 375 7777

Kazuhiko Hirakawa publications per year

The chart shows the history of publications by Kazuhiko Hirakawa between 1984 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kazuhiko Hirakawa published across 43 years, from 1984 to 2026, averaging 10 papers a year. Output peaked at 23 publications in 2010. 13 of the 430 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1984 to 2026. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 2010. 1984: 2 publications 1985: 1 publication 1986: 4 publications 1987: 5 publications 1988: 4 publications 1989: 7 publications 1990: 2 publications 1991: 4 publications 1992: 6 publications 1993: 7 publications 1994: 6 publications 1995: 4 publications 1996: 9 publications 1997: 6 publications 1998: 9 publications 1999: 5 publications 2000: 4 publications 2001: 7 publications 2002: 12 publications 2003: 6 publications 2004: 9 publications 2005: 15 publications 2006: 20 publications 2007: 20 publications 2008: 12 publications 2009: 17 publications 2010: 23 publications 2011: 11 publications 2012: 9 publications 2013: 10 publications 2014: 8 publications 2015: 11 publications 2016: 18 publications 2017: 14 publications 2018: 19 publications 2019: 15 publications 2020: 14 publications 2021: 20 publications 2022: 11 publications 2023: 18 publications 2024: 13 publications 2025: 10 publications 2026: 3 publications
1984 2026

430 publications in total across all disciplines

View publications per year as a table
Kazuhiko Hirakawa: publications per year, 1984 to 2026
Year Publications
1984 2
1985 1
1986 4
1987 5
1988 4
1989 7
1990 2
1991 4
1992 6
1993 7
1994 6
1995 4
1996 9
1997 6
1998 9
1999 5
2000 4
2001 7
2002 12
2003 6
2004 9
2005 15
2006 20
2007 20
2008 12
2009 17
2010 23
2011 11
2012 9
2013 10
2014 8
2015 11
2016 18
2017 14
2018 19
2019 15
2020 14
2021 20
2022 11
2023 18
2024 13
2025 10
2026 3
Total 430
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Kazuhiko Hirakawa 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 Kazuhiko Hirakawa 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, 370–389 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: 375 publications — 74th percentile

74% 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
370–389 356 375
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
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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Kazuhiko Hirakawa 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 Kazuhiko Hirakawa 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, 42–43 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: 43 D-Index — 5th percentile

5% 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 43
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
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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Best Publications

  • Interface roughness scattering in GaAs/AlAs quantum wells

    H. Sakaki;T. Noda;K. Hirakawa;M. Tanaka

  • Mobility of the two-dimensional electron gas at selectively doped n -type AlxGa1-xAs/GaAs heterojunctions with controlled electron concentrations.

    Kazuhiko Hirakawa;Hiroyuki Sakaki

  • Intrinsic electron accumulation layers on reconstructed clean InAs(100) surfaces.

    M. Noguchi;K. Hirakawa;T. Ikoma

  • Bound-to-continuum intersubband photoconductivity of self-assembled InAs quantum dots in modulation-doped heterostructures

    S.-W. Lee;K. Hirakawa;Y. Shimada

  • Energy relaxation of two‐dimensional electrons and the deformation potential constant in selectively doped AlGaAs/GaAs heterojunctions

    K. Hirakawa;H. Sakaki

  • Fabrication of graphene nanoribbon by local anodic oxidation lithography using atomic force microscope

    Satoru Masubuchi;Masashi Ono;Kenji Yoshida;Kazuhiko Hirakawa

  • Machine-Learning-Optimized Aperiodic Superlattice Minimizes Coherent Phonon Heat Conduction

    Run Hu;Run Hu;Sotaro Iwamoto;Lei Feng;Shenghong Ju

  • Single-photon detector in the microwave range

    O. Astafiev;S. Komiyama;T. Kutsuwa;V. Antonov

  • MEMS reconfigurable metamaterial for terahertz switchable filter and modulator

    Zhengli Han;Kenta Kohno;Hiroyuki Fujita;Kazuhiko Hirakawa

  • Far‐infrared emission spectroscopy of hot two‐dimensional plasmons in Al0.3Ga0.7As/GaAs heterojunctions

    K. Hirakawa;K. Yamanaka;M. Grayson;D. C. Tsui

  • Kondo universal scaling for a quantum dot coupled to superconducting leads.

    Christo Buizert;Akira Oiwa;Kenji Shibata;Kazuhiro Hirakawa

  • Mobility modulation of the two-dimensional electron gas via controlled deformation of the electron wave function in selectively doped AlGaAs-GaAs heterojunctions.

    K. Hirakawa;H. Sakaki;J. Yoshino

  • Terahertz conductivity and possible BLOCH gain in semiconductor superlattices.

    Y Shimada;K Hirakawa;Maxim Odnoblioudov;Koung-An Chao

  • Charge-sensitive infrared phototransistors : Characterization by an all-cryogenic spectrometer

    Takeji Ueda;Zhenghua An;Kazuhiko Hirakawa;Susumu Komiyama

  • Phase coherence length of electron waves in narrow AlGaAs/GaAs quantum wires fabricated by focused ion beam implantation

    Toshiro Hiramoto;Kazuhiko Hirakawa;Yasuhiro Iye;Toshiaki Ikoma

  • Gate-tunable large negative tunnel magnetoresistance in Ni-C60-Ni single molecule transistors.

    Kenji Yoshida;Ikutaro Hamada;Shuichi Sakata;Akinori Umeno

  • Concentration of electrons in selectively doped GaAlAs/GaAs heterojunction and its dependence on spacer‐layer thickness and gate electric field

    K. Hirakawa;H. Sakaki;J. Yoshino

  • Large Anisotropy of the Spin-Orbit Interaction in a Single InAs Self-Assembled Quantum Dot

    S. Takahashi;R. S. Deacon;K. Yoshida;A. Oiwa

  • Electrically tuned spin–orbit interaction in an InAs self-assembled quantum dot

    Y. Kanai;R. S. Deacon;S. Takahashi;A. Oiwa

  • Kondo-enhanced Andreev transport in single self-assembled InAs quantum dots contacted with normal and superconducting leads

    R. S. Deacon;Y. Tanaka;A. Oiwa;R. Sakano

Frequent Co-Authors

Seigo Tarucha
Seigo Tarucha University of Tokyo
Yasuhiko Arakawa
Yasuhiko Arakawa University of Tokyo
Masahiro Nomura
Masahiro Nomura University of Tokyo
Hiroshi Toshiyoshi
Hiroshi Toshiyoshi University of Tokyo
Hiroyuki Fujita
Hiroyuki Fujita Tokyo City University
Christo Buizert
Christo Buizert Oregon State University
Toshiro Hiramoto
Toshiro Hiramoto University of Tokyo
Heinrich Kurz
Heinrich Kurz RWTH Aachen University
Yasuhiro Tokura
Yasuhiro Tokura University of Tsukuba
Naoto Nagaosa
Naoto Nagaosa University of Tokyo

External Links

Personal website of Kazuhiko Hirakawa Google Scholar page

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Best Scientists Citing Kazuhiko Hirakawa

Taiichi Otsuji

Taiichi Otsuji

Tohoku University

Publications: 35

David A. Ritchie

David A. Ritchie

University of Cambridge

Publications: 34

Jesper Nygård

Jesper Nygård

University of Copenhagen

Publications: 23

Ken W. West

Ken W. West

Princeton University

Publications: 21

Christopher McConville

Christopher McConville

Deakin University

Publications: 20

Wojciech Knap

Wojciech Knap

Warsaw University of Technology

Publications: 20

Chengkuo Lee

Chengkuo Lee

National University of Singapore

Publications: 20

Hongqi Xu

Hongqi Xu

Peking University

Publications: 19

Klaus Ensslin

Klaus Ensslin

ETH Zurich

Publications: 19

Tim D. Veal

Tim D. Veal

University of Liverpool

Publications: 19

Werner Wegscheider

Werner Wegscheider

Solid State Physics Laboratory

Publications: 18

Thomas Ihn

Thomas Ihn

Solid State Physics Laboratory

Publications: 18

Peter Krogstrup

Peter Krogstrup

University of Copenhagen

Publications: 17

Sanjay Krishna

Sanjay Krishna

The Ohio State University

Publications: 17

Gerhard Abstreiter

Gerhard Abstreiter

Technical University of Munich

Publications: 17

Prakash Pitchappa

Prakash Pitchappa

Agency for Science, Technology and Research

Publications: 17

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