橋坂研究室

東京大学 物性研究所 ナノスケール物性研究部門
Hashisaka Group @ ISSP, The University of Tokyo



論文等の成果のページ

※学会発表はこちら ⇒ PRESENTATION

※橋坂研究室メンバーを太字で記載


    2025

  1. “Multilayer Cryogenic Powder Filters with Low Parasitic Capacitance”
    I. Pradhan, H. Li, A. Rupp, Y. Sato, H. Vo Van Qui, M. Tanaka, T. Ideue, E. Bocquillon, M. Hashisaka
    arXiv:2507.23388 arXiv
  2. “Magnetic resonance and microwave resistance modulation in the van der Waals ferrimagnet Mn3Si2Te6”
    M. Tanaka, A. Ahad, D.-A. Deaconu, V. Shah, D. Nishio-Hamane, T. Ishii, M. Hashisaka, S. Sakamoto, S. Miwa, M. S. Bahramy, and T. Ideue
    Physical Review B 112, L180401-1-8 (2025). doi.org/10.1103/pxq5-42q6
  3. “Probing anyon statistics on a single-edge loop in the fractional quantum Hall regime”
    F. Ronetti, N. Demazure, J. Rech, T. Jonckheere, B. Grémaud, L. Raymond, M. Hashisaka, T. Kato, T. Martin
    Physical Review B 112, 125166-1-17 (2025). doi.org/10.1103/tdkj-k211
  4. “Anyon braiding on the single edge of a fractional quantum Hall state”
    F. Ronetti, N. Demazure, J. Rech, T. Jonckheere, B. Grémaud, L. Raymond, M. Hashisaka, T. Kato, T. Martin
    Physical Review Letters 135, 146601-1-6 (2025). doi.org/10.1103/yq1x-kxgm
  5. “Coherent electron splitting in interacting chiral edge channels”
    E. Iyoda, T. Shimizu, and M. Hashisaka
    Physical Review B 111, 165414-1-11 (2025). doi.org/10.1103/PhysRevB.111.165414
  6. “Mach-Zehnder interference of fractionalized electron-spin excitations”
    T. Shimizu, E. Iyoda, S. Sasaki, A. Endo, S. Katsumoto, N. Kumada, and M. Hashisaka
    Physical Review B 111, L161406-1-6 (2025). doi.org/10.1103/PhysRevB.111.L161406
  7. “分数/整数量子ホール接合から紐解く分散エッジ状態の量子相”
    橋坂昌幸, 村木康二
    固体物理, vol. 60, No. 4, 171 (2025).

  8. 2024

  9. “エッジ状態のダイナミクスとエニオン統計”
    橋坂昌幸
    第68回 物性若手夏の学校テキスト, p240-250 (2024). doi.org/10.57393/natsugaku.2.0_240
  10. “On-chip transfer of ultrashort graphene plasmon wavepackets using terahertz electronics”
    K. Yoshioka, G. Bernard, T. Wakamura, M. Hashisaka, K. Sasaki, S. Sasaki, K. Watanabe, T. Taniguchi, and N. Kumada
    Nature Electronics 7, 537-544 (2024). doi.org/10.1038/s41928-024-01197-x
  11. “Gate-tunable giant superconducting nonreciprocal transport in few-layer Td-MoTe2”
    T. Wakamura, M. Hashisaka, S. Hoshino, M. Bard, S. Okazakki, T. Sasagawa, T. Taniguchi, K. Watanabe, K. Muraki, and N. Kumada
    Physical Review Research 6, 013132-1-13 (2024). doi.org/10.1103/PhysRevResearch.6.013132

  12. 2023

  13. “Coherent-incoherent crossover of charge and neutral mode transport as evidence for the disorder-dominated fractional edge phase”
    M. Hashisaka, T. Ito, T. Akiho, S. Sasaki, N. Kumada, N. Shibata, K. Muraki
    Physical Review X 13, 031024-1-15 (2023). doi.org/10.1103/PhysRevX.13.031024

  14. 2022

  15. “Fast time-domain current measurement for quantum dot charge sensing using a homemade cryogenic transimpedance amplifier”
    H. Bohuslavskyi, M. Hashisaka, T. Shimizu, T. Akiho, K. Muraki, N. Kumada
    Applied Physics Letters 121, 184003 (2022).  doi.org/10.1063/5.0118391
  16. “Ultrafast intrinsic optical-to-electrical conversion dynamics in graphene photodetector”
    K. Yoshioka, T. Wakamura, M. Hashisaka, K. Watanabe, T. Taniguchi, N. Kumada
    Nature Photonics 16, 718-723 (2022).  doi.org/10.1038/s41566-022-01058-z

  17. 2021

  18. “Homemade-HEMT-based transimpedance amplifier for high-resolution shot-noise measurements”
    T. Shimizu, M. Hashisaka, H. Bohuslavskyi, T. Akiho, N. Kumada, S. Katsumoto, and K. Muraki
    Review of Scientific Instruments 92, 124715-1-7 (2021).  doi.org/10.1063/5.0076196
  19. “Time-resolved investigation of plasmon mode along interface channels in integer and fractional quantum Hall regimes”
    C. Lin, M. Hashisaka, T. Akiho, K. Muraki, and T. Fujisawa
    Physical Review B 104, 125304-1-9 (2021).  doi.org/10.1103/PhysRevB.104.125304
  20. “Shot noise in mesoscopic systems: from single particles to quantum liquids”
    K. Kobayashi and M. Hashisaka
    Journal of the Physical Society of Japan 90, 102001-1-47 (2021) (Invited Review Paper).  doi.org/10.7566/JPSJ.90.102001
  21. “Andreev reflection of fractional quantum Hall quasiparticles”
    M. Hashisaka, T. Jonckheere, T. Akiho, S. Sasaki, J. Rech, T. Martin, and K. Muraki
    Nature Communications 12, 2794-1-7 (2021).  doi.org/10.1038/s41467-021-23160-6
  22. “Cryogenic GaAs high-electron-mobility-transistor amplifier for current noise measurements”
    S. Lee, M. Hashisaka, T. Akiho, K. Kobayashi, and K. Muraki
    Review of Scientific Instruments 92, 023910 (2021).  doi.org/10.1063/5.0036419
  23. “Quantized charge fractionalization at quantum Hall Y junctions in the disorder dominated regime”
    C. Lin, M. Hashisaka, T. Akiho, K. Muraki, and T. Fujisawa
    Nature Communications 12, 131-1-7 (2021).  doi.org/10.1038/s41467-020-20395-7

  24. 2020

  25. “On-chip coherent frequency-domain THz spectroscopy for electrical transport”
    K. Yoshioka, N. Kumada, K. Muraki, and M. Hashisaka
    Applied Physics Letters 117, 161103 (2020).  doi.org/10.1063/5.0024089
  26. “Suppression of gate screening on edge magnetoplasmons by highly resistive ZnO gate”
    N. Kumada, N.-H. Tu, K.-i. Sasaki, T. Ota, M. Hashisaka, S. Sasaki, K. Onomitsu, and K. Muraki
    Physical Review B 101, 025205 (2020).  doi.org/10.1103/PhysRevB.101.205205
  27. “Two-step breakdown of a local v = 1 quantum Hall state”
    M. Hashisaka, K. Muraki, and T. Fujisawa
    Physical Review B 101, 041303(R) (2020).  doi.org/10.1103/PhysRevB.101.041303

  28. 2019

  29. “Charge equilibration in integer and fractional quantum Hall edge channels in a generalized Hall-bar device”
    C. Lin, R. Eguchi, M. Hashisaka, T. Akiho, K. Muraki, and T. Fujisawa
    Physical Review B 99, 195304 (2019).  doi.org/10.1103/PhysRevB.99.195304
  30. “Spectroscopic study on hot-electron transport in a quantum Hall edge channel”
    T. Ota, S. Akiyama, M. Hashisaka, K. Muraki, and T. Fujisawa
    Physical Review B 99, 085310 (2019).  doi.org/10.1103/PhysRevB.99.085310

  31. 2018

  32. “Coupling between Quantum Hall Edge Channels on Opposite Sides of a Hall Bar”
    N. H. Tu, M. Hashisaka, T. Ota, Y. Sekine, K. Muraki, T. Fujisawa, and N. Kumada
    Solid State Communications 283, 32-36 (2018).  doi.org/10.1016/j.ssc.2018.08.007
  33. “Tomonaga-Luttinger-Liquid Nature of Edge Excitations in Integer Quantum Hall Edge Channels”
    M. Hashisaka, and T. Fujisawa
    Reviews in Physics 3, 32 (2018).  doi.org/10.1016/j.revip.2018.07.001
  34. “Electronic energy spectroscopy of monochromatic edge magnetoplasmons in the quantum Hall regime”
    T. Ota, M. Hashisaka, K. Muraki, and T. Fujisawa
    Journal of Physics: Condensed Matter 30, 345301 (2018).  doi.org/10.1088/1361-648X/aad220
  35. “Signatures of a non-thermal metastable state in copropagating quantum Hall edge channels”
    K. Itoh, R. Nakazawa, T. Ota, M. Hashisaka, K. Muraki, and T. Fujisawa
    Physical Review Letters 120, 197701 (2018).  doi.org/10.1103/PhysRevLett.120.197701

  36. 2017

  37. “朝永・ラッティンジャー液体における電荷・スピン密度波束の観測実験”
    橋坂昌幸, 藤澤利正
    日本物理学会誌, vol. 72, 805 (2017) (表紙掲載).
  38. “Two-electron double quantum dot coupled to coherent photon and phonon fields”
    Y. Sato, J. C. H. Chen, M. Hashisaka, K. Muraki, and T. Fujisawa
    Physical Review B 96, 115416 (2017).  doi.org/10.1103/PhysRevB.96.115416
  39. “Charge fractionalization in artificial Tomonaga-Luttinger liquids with controlled interaction strength”
    P. Brasseur, N. H. Tu, Y. Sekine, K. Muraki, M. Hashisaka, T. Fujisawa, and N. Kumada
    Physical Review B 96, 081101(R) (2017).  doi.org/10.1103/PhysRevB.96.081101
  40. “Negative and positive cross-correlations of current noises in quantum Hall edge channels at bulk filling factor v = 1”
    T. Ota, M. Hashisaka, K. Muraki, and T. Fujisawa
    Journal of Physics: Condensed Matter 29, 225302-1 (2017).  doi.org/10.1088/1361-648X/aa6cc0
  41. “Waveform measurement of charge- and spin-density wavepackets in a chiral Tomonaga-Luttinger liquid”
    M. Hashisaka, N. Hiyama, T. Akiho, K. Muraki, and T. Fujisawa
    Nature Physics 13, 559 (2017).  doi.org/10.1038/nphys4062

  42. 2016

  43. “局所分数量子ホール系における分数電荷準粒子のトンネル現象”
    橋坂昌幸, 太田智明, 村木康二, 藤澤利正
    固体物理, vol. 51, No. 2, 127 (2016).
  44. “Long-lived binary tunneling spectrum in the quantum Hall Tomonaga-Luttinger liquid”
    K. Washio, R. Nakazawa, M. Hashisaka, K. Muraki, Y. Tokura, and T. Fujisawa
    Physical Review B 93, 075304 (2016).  doi.org/10.1103/PhysRevB.93.075304

  45. 2015

  46. “Exchange-induced spin blockadein a two-electron double quantum dot”
    D. Imanaka, S. Sharmin, M. Hashisaka, K. Muraki, and T. Fujisawa
    Physical Review Letters 115, 176802 (2015).  doi.org/10.1103/PhysRevLett.115.176802
  47. “Enhanced electron-phonon coupling for a semiconductor charge qubit in a surface phonon cavity”
    J. C. H. Chen, Y. Sato, R. Kosaka, M. Hashisaka, K. Muraki, and T. Fujisawa
    Scientific Reports 5, 15176 (2015).  doi.org/10.1038/srep15176
  48. “An edge magnetoplasmon Mach-Zehnder interferometer”
    N. Hiyama, M. Hashisaka, and T. Fujisawa
    Applied Physics Letters 107, 143101 (2015).  doi.org/10.1063/1.4932111
  49. “Shot-noise evidence of fractional quasiparticle creation in a local fractional quantum Hall state”
    M. Hashisaka, T. Ota, K. Muraki, and T. Fujisawa
    Physical Review Letters 114, 056802 (2015).  doi.org/10.1103/PhysRevLett.114.056802

  50. 2014

  51. “Resonant edge magnetoplasmons and their decay in graphene”
    N. Kumada, P. Roulleau, B. Roche, M. Hashisaka, H. Hibino, I. Petkovic, and D. C. Glattli
    Physical Review Letters 113, 26601 (2014).  doi.org/10.1103/PhysRevLett.113.266601
  52. “Spin-dependent tunneling rates for electrostatically defined GaAs quantum dot”
    M. Yamagishi, N. Watase, M. Hashisaka, K. Muraki, and T. Fujisawa
    Physical Review B 90, 035306 (2014).  doi.org/10.1103/PhysRevB.90.035306
  53. “Plasmon transport and its guiding in graphene”
    N. Kumada, R. Dubourget, K. Sasaki, S. Tanabe, H. Hibino, H. Kamata, M. Hashisaka, K. Muraki, and T. Fujisawa
    New Journal of Physics, 16, 063055 (2014).  doi.org/10.1088/1367-2630/16/6/063055
  54. “量子ホール端における電荷密度波のダイナミクス”
    橋坂昌幸, 鎌田大, 藤澤利正, 熊田倫雄, 村木康二
    固体物理, vol. 49, No. 5, 359 (2014).
  55. “Cross-correlation measurement of quantum shot noise using homemade transimpedance amplifiers”
    M. Hashisaka, T. Ota, M. Yamagishi, K. Muraki, and T. Fujisawa
    Review of Scientific Instruments 85, 054704 (2014).  doi.org/10.1063/1.4875588
  56. “Fractionalized wave packets from an artificial Tomonaga-Luttinger liquid”
    H. Kamata, N. Kumada, M. Hashisaka, K. Muraki, and T. Fujisawa
    Nature Nanotechnology 9, 177 (2014).  doi.org/10.1038/nnano.2013.312
  57. “Single-electron counting statistics with a finite frequency bandwidth”
    N. Watase, M. Hashisaka, K. Muraki, and T. Fujisawa
    Japanese Journal of Applied Physics 53, 04EJ01 (2014).  doi.org/10.7567/JJAP.53.04EJ01

  58. 2013

  59. “Distributed-element circuit model of edge magnetoplasmon transport”
    M. Hashisaka, H. Kamata, N. Kumada, K. Washio, R. Murata, K. Muraki, and T. Fujisawa
    Physical Review B 88, 235409 (2013).  doi.org/10.1103/PhysRevB.88.235409
  60. “Plasmon transport in graphene investigated by time-resolved electrical measurements”
    N. Kumada, S. Tanabe, H. Hibino, H. Kamata, M. Hashisaka, K. Muraki, and T. Fujisawa
    Nature Communications 4, 1363 (2013).  doi.org/10.1038/ncomms2353

  61. 2012

  62. “Frequancy conversion of rf edge magnetoplasmons using a quantum point contact”
    M. Hashisaka, R. Murata, K. Muraki, and T. Fujisawa
    Applied Physics Letters 100, 233501 (2012).  doi.org/10.1063/1.4726136
  63. “Distributed electrochemical capacitance evidenced in high-frequency admittance measurements on a quantum Hall device”
    M. Hashisaka, K. Washio, H. Kamata, K. Muraki, and T. Fujisawa
    Physical Review B 85, 155424 (2012).  doi.org/10.1103/PhysRevB.85.155424
  64. “Correlation of 1/f noise between semiconductor point contacts with a common lead”
    M. Yamagishi, M. Hashisaka,K. Muraki, and T. Fujisawa
    Japanese Journal of Applied Physics 51, 02BJ08 (2012).  doi.org/10.1143/JJAP.51.02BJ08
  65. “Shot noise induced by electron-nuclear spin-flip scattering in a non-equilibrium quantum wire”
    K. Chida, M. Hashisaka, Y. Yamauchi, S. Nakamura, T. Arakawa, T. Machida, K. Kobayashi and T. Ono
    Physical Review B 85, 041309(R) (2012).  doi.org/10.1103/PhysRevB.85.041309

  66. 2011

  67. “Non-equilibrium transport in a quantum wire in the quantum Hall regime”
    K. Chida, M. Hashisaka, Y. Yamauchi, S. Nakamura, T. Arakawa, T. Machida, K. Kobayashi and T. Ono
    Journal of Physics: Conference Series 334, 012031 (2011).  doi.org/10.1088/1742-6596/334/1/012031
  68. “Time resolved potential measurement at quantum point contacts under irradiation of surface acoustic burst wave”
    T. Fujisawa, K. Nishio, T. Nagase, M. Hashisaka, and K. Muraki
    AIP Conference Proceedings 1399, 269 (2011).  doi.org/10.1063/1.3666357
  69. “Dispersive lineshape of the resistively detected NMR in a quantum wire in the quantum Hall regime”
    K. Chida, M. Hashisaka, Y. Yamauchi, S. Nakamura, T. Arakawa, T. Machida, K. Kobayashi and T. Ono
    AIP Conference Proceedings 1399, 675 (2011).  doi.org/10.1063/1.3666557
  70. “Non-equilibrium fluctuation relation in a quantum coherent conductor”
    S. Nakamura, Y. Yamauchi, M. Hashisaka, K. Chida, K. Kobayashi, T. Ono, R. Leturcq, K. Ensslin, K. Saito, Y. Utsumi, A. C. Gossard
    AIP Conference Proceedings 1399, 329 (2011).  doi.org/10.1063/1.3666387
  71. “Fluctuation theorem and microreversibility in a quantum coherent conductor”
    S. Nakamura, Y. Yamauchi, M. Hashisaka, K. Chida, K. Kobayashi, T. Ono, R. Leturcq, K. Ensslin, K. Saito, Y. Utsumi, A. C. Gossard
    Physical Review B 83, 155431 (2011).  doi.org/10.1103/PhysRevB.83.155431
  72. “Admittance Measurement for a Quantum Point Contact in a Multi-terminal Quantum Hall Device”
    K. Washio, M. Hashisaka, H. Kamata, K. Muraki, and T. Fujisawa
    Japanese Journal of Applied Physics 50, 04DJ04 (2011).  doi.org/10.1143/JJAP.50.04DJ04
  73. “Interferometric detection of edge magnetoplasmons in AlGaAs/GaAs heterostructures”
    M. Hashisaka, K. Washio, H. Kamata, K. Muraki, and T. Fujisawa
    Physica Status Solidi (C) 8, 381 (2011).  doi.org/10.1002/pssc.201000477

  74. 2010

  75. “Temperature dependence of the visibility in an electronic Mach-Zehnder interferometer”
    M. Hashisaka, A. Helzel, S. Nakamura, L. Litvin, Y. Yamauchi, K. Kobayashi, T. Ono, H. -P. Tranitz, W. Wegscheider, C. Strunk
    Physica E 42, 1091 (2010).  doi.org/10.1016/j.physe.2009.11.072
  76. “Nonequilibrium Fluctuation Relations in a Quantum Coherent Conductor”
    S. Nakamura, Y. Yamauchi, M. Hashisaka, K. Chida, K. Kobayashi, T. Ono, R. Leturcq, K. Ensslin, K. Saito, Y. Utsumi, A. C. Gossard
    Physical Review Letters 104, 080602 (2010).  doi.org/10.1103/PhysRevLett.104.080602
  77. “Bolometric shot noise detection in coupled quantum contacts”
    M. Hashisaka, Y. Yamauchi, S. Nakamura, S. Kasai, T. Ono, K. Kobayashi
    AIP conference proceedings 1199, 367 (2010).  doi.org/10.1063/1.3295455
  78. “Spin Polarization in a curvature-controlled quantum point contact”
    S. Nakamura, M. Hashisaka, Y. Yamauchi, S. Kasai, T. Ono, K. Kobayashi
    AIP conference proceedings 1199, 451 (2010).  doi.org/10.1063/1.3295500

  79. 2009

  80. “Noise measurement system at electron temperature down to 20 mK with combinations of the low pass filters”
    M. Hashisaka, Y. Yamauchi, K. Chida, S. Nakamura, K. Kobayashi, T. Ono
    Review of Scientific Instruments 80, 096105 (2009).  doi.org/10.1063/1.3227029
  81. “Non-equilibrium dephasing in ballistic interferometers”
    Y. Yamauchi, M. Hashisaka, S. Nakamura, K. Chida, S. Kasai, T. Ono, R. Leturcq, K. Ensslin, D. C. Driscoll, A. C. Gossard, K. Kobayashi
    Journal of Physics: Conference Series 193, 012045 (2009).  doi.org/10.1088/1742-6596/193/1/012045
  82. “Conductance anomaly and Fano factor reduction in quantum point contacts”
    S. Nakamura, M. Hashisaka, Y. Yamauchi, S. Kasai, T. Ono, K. Kobayashi
    Physical Review B 79, 201308(R) (2009).  doi.org/10.1103/PhysRevB.79.201308
  83. “Universality of Bias- and Temperature-induced Dephasing in Ballistic Electronic Interferometers”
    Y. Yamauchi, M. Hashisaka, S. Nakamura, K. Chida, S. Kasai, T. Ono, R. Leturcq, K. Ensslin, D. C. Driscoll, A. C. Gossard, and K. Kobayashi
    Physical Review B 79, 161306(R) (2009).  doi.org/10.1103/PhysRevB.79.161306

  84. 2008

  85. “Bolometric Detection of Quantum Shot Noise in Coupled Mesoscopic Systems”
    M. Hashisaka, Y. Yamauchi, S. Nakamura, S. Kasai, T. Ono, K. Kobayashi
    Physical Review B 78, 241303(R) (2008).  doi.org/10.1103/PhysRevB.78.241303
  86. “Measurement for quantum shot noise in a quantum point contact at low temperatures”
    M. Hashisaka, Y. Yamauchi, S. Nakamura, S. Kasai, K. Kobayashi, T. Ono
    Journal of Physics: Conference Series 109, 012013 (2008).  doi.org/10.1088/1742-6596/109/1/012013
  87. “Development of a measurement system for quantum shot noise at low temperatures”
    M. Hashisaka, S. Nakamura, Y. Yamauchi, S. Kasai, K. Kobayashi, T. Ono
    Physica Status Solidi (C) 5, 182 (2008).  doi.org/10.1002/pssc.200776535

  88. 2007

  89. “Spin-filtering effect of ferromagnetic semiconductor La2NiMnO6”
    M. Hashisaka, D. Kan, A. Masuno, T. Terashima, M. Takano K. Mibu
    Journal of Magnetism and Magnetic Materials 310, 1975 (2007).  doi.org/10.1016/j.jmmm.2006.11.007
  90. “Multiferroic thin film of Bi2NiMnO6 with ordered double-perovskite structure”
    M. Sakai, A. Masuno, D. Kan, M. Hashisaka, K. Takata, M. Azuma, M. Takano, Y. Shimakawa
    Applied Physics Letters 90, 072903 (2007).  doi.org/10.1063/1.2539575

  91. 2006

  92. “Epitaxial growth of ferromagnetic La2NiMnO6 with ordered double-perovskite structure”
    M. Hashisaka, D. Kan, A. Masuno, M. Takano, Y. Shimakawa, T. Terashima, K. Mibu
    Applied Physics Letters 89, 032504 (2006).  doi.org/10.1063/1.2226997

  93. 2005

  94. “New ferromagnetic ferroelectric Bi2NiMnO6 compound with double-perovskite structure”
    Y. Shimakawa, M. Azuma, K. Takata, M. Hashisaka, D. Kan, A. Masuno, M. Sakai, T. Terashima, K. Mibu, M. Takano
    Proc. In 12th US-Japan Seminar on Dielectric & Piezoelectric Ceramics 203, (2005).