2次元トポロジカル絶縁体と超伝導体の接合におけるスピン依存伝導

• Project Area: Frontiers of materials science spun from topology
• Project/Area Number: 16H00984
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: The University of Tokyo
• Principal Investigator: 松尾 貞茂 東京大学, 大学院工学系研究科(工学部), 助教 (90743980)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000); Fiscal Year 2017: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2016: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
• Keywords: マヨラナ粒子 / 超伝導 / 半導体ナノ細線 / メゾスコピック物理 / トポロジカル絶縁体 / アンドレーエフ反射 / 量子ホール状態 / ヘリカル状態 / メゾスコピック系

Outline of Annual Research Achievements

トポロジカル絶縁体の発見を契機に、固体物性においてトポロジカル相の物性研究が活発に行われている。その中でも、超伝導体とトポロジカル絶縁体の接合はマヨラナ粒子の実現が予言されていることもあり、非常に注目を集めている。本研究では、この超伝導体とトポロジカル絶縁体の接合系の電子輸送特性におけるスピン依存性を明らかにすること、とくに、量子スピンホール状態のヘリカル端状態でのクーパー対分離と量子ホール状態でのスピン三重項超伝導近接効果の存在を実証することを目的に研究を行っている。
昨年度始めた高移動度InAs量子井戸基板上に形成した量子細線の電気測定を行った結果、1次元電子系で期待される朝永ラッティンジャー液体（TLL）的ふるまいが観測された。また、このTLLのふるまいからラッティンジャー液体パラメータを求めると0.3と小さな値となることがわかった。このことはInAs量子細線が大きな電子間相互作用を有しており、理論提案にあるような電子相関を利用したトポロジカル超伝導現象の実現に適していることが分かった。
さらに、この研究目的に挙げていたクーパー対分離に関して、ヘリカル状態ではないが二つの並列なInAsナノ細線において量子ドットを介したクーパー対分離とドットを介さない弾道的な電子輸送でのクーパー対分離を共に初めて実証することに成功した。さらに、後者では分離効率が100％を超えることも実証した。これらは並列な二つの１次元電子系においてもクーパー対分離がおきること、電子相関により分離効率が増大することを示しており、将来的な量子情報処理デバイスへの応用やパラフェルミオンの実現にもつながる非常に重要な結果である。
加えて、コルビノ型ジョセフソン接合の実験も行い、ジョセフソン渦糸の大きさと評価とそのゲート制御に成功した。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] Ruhr大学(ドイツ)
• [Int'l Joint Research] カリフォルニア大学/New York 大学(米国)
• [Int'l Joint Research] 北京大学(中国)
• [Journal Article] Equal-Spin Andreev Reflection in Junctions between Spin-resolved Quantum Hall Bulk State and Superconductor (2018)
  • Author(s): Sadashige Matsuo, Kento Ueda, Shoji Baba, Hiroshi Kamata, Mizuki Tateno, Javad Shabani, Christopher Palmstrom, Seigo Tarucha,
  • Journal Title: Scientific Reports Volume: 8 Pages: 3454-3454
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Cooper pair splitting in two parallel InAs nanowires (2018)
  • Author(s): Shoji Baba, Christian Junger, Sadashige Matsuo, Andreas Baumgartner, Yosuke Sato, Hiroshi Kamata, Kan Li, Soren Jeppesen, Lars Samuelson, Hongqi Xu, Christian Schonenberger, Seigo Tarucha,
  • Journal Title: arXiv Volume: 1802 Pages: 08059-08059
  • Open Access
• [Journal Article] A single eletron-photon pair generation from a single polarization-entangled photon pair (2017)
  • Author(s): Kazuyuki Kuroyama, Marcus Larsson, Sadashige Matsuo, Takafumi Fujita, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, Akira Oiwa, Seigo Tarucha,
  • Journal Title: Scientific Reports Volume: 7 Pages: 16968-16968
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Gate tunable parallel double quantum dot in InAs double-nanowire junctions (2017)
  • Author(s): Shoji Baba, Sadashige Matsuo, Hiroshi Kamata, Russell S. Deacon, Akira Oiwa Kan Li, S. Jeppesen, L. Samuelson, Hongqi Xu, Seigo Tarucha,
  • Journal Title: Applied Physics Letters Volume: 111 Pages: 233513-233513
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetic Field Inducing Zeeman Splitting and Anomalous Conductance Reduction of Half-integer Quantized Plateaus in InAs Quantum Wires (2017)
  • Author(s): Sadashige Matsuo, Hiroshi Kamata, Shoji Baba, Russell Deacon, Javad Shabani, Christopher Palmstrom, Seigo Tarucha,
  • Journal Title: Phys. Rev. B (R) Volume: 96 Pages: 201404-201404
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Giant Fano factor and bistability in a Corbino disk in the quantum Hall effect breakdown regime (2016)
  • Author(s): Tokuro Hata, Tomonori Arakawa, Kensaku Chida, Sadashige Matsuo, and Kensuke Kobayashi
  • Journal Title: Journal of Physics: Condensed Matter Volume: 28 Issue: 5 Pages: 055801-055801
  • DOI: 10.1088/0953-8984/28/5/055801
  • Peer Reviewed / Open Access
• [Journal Article] Anomalous behavior of 1/f noise in graphene near the charge neutrality point (2016)
  • Author(s): Shunpei Takeshita, Sadashige Matsuo, Takahiro Tanaka, Shu Nakaharai, Kazuhito Tsukagoshi, Takahiro Moriyama, Teruo Ono, Tomonori Arakawa, and Kensuke Kobayashi
  • Journal Title: Applied Physics Letters Volume: 108 Issue: 10 Pages: 103106-103106
  • DOI: 10.1063/1.4943642
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Presentation] Photon-spin quantum interface using gate-defined quantum dots (2018)
  • Author(s): Akira Oiwa, Takafumi Fujita, Kazuyuki Kuroyama, Sadashige Matsuo, Rio Fukai, Haruki KIyama, Arne, Ludwig, Andreas Wieck, and Seigo Tarucha
  • Organizer: 2018 Workshop on Innovative Nanoscale Devices and Systems (WINDS 2018)
  • Int'l Joint Research / Invited
• [Presentation] Josephson emission of InAs nanowire Josephson junctions (2018)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, K. Li, H. Q. Xu, K. Ishibashi, S. Tarucha
  • Organizer: The 2nd international symposium on Dynamics in Artificial Quantum Systems (DAQS2018)
  • Int'l Joint Research
• [Presentation] 超伝導体Al-並列二重InAsナノ細線-超伝導体Alデバイスでの電子輸送のゲート操作 (2018)
  • Author(s): 上田健人, 松尾貞茂, 鎌田大, 佐藤洋介, 武重有祐, K. Li, S. Jeppesen, L. Samuelson, H. Q. Xu, 樽茶清悟
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] InAs量子井戸に形成された1次元電子系の朝永－ラッティンジャー液体的性質 (2018)
  • Author(s): 佐藤洋介, 松尾貞茂, 上田健人, 武重有祐, 鎌田大, J. S. LeeC.B. Shojaei, C. Palmstrom, 都倉康弘, 樽茶清悟
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Single-shot measurement of quantum state transfer from photon polarization to electron spin (2018)
  • Author(s): S. Matsuo, K. Kuroyama, J. Muramoto, K. Heya, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
  • Organizer: 平成29年度スピン変換年次報告会
• [Presentation] Towards electrical field tuning of topological crystalline insulator:SnTe (2018)
  • Author(s): Y. Takeshige, K. Ueda, Y. Sato, M. Kamata, R. Nakanishi, K. Miyauchi, R. Akiyama, S. Hasegawa, S. Matsuo, S. Tarucha
  • Organizer: 8th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] 半導体ナノ細線 /超伝導体ハイブリッド構造でのマヨラナ粒子の探索 (2018)
  • Author(s): 松尾貞茂
  • Organizer: 第65回応用物理学会秋季学術講演会
  • Invited
• [Presentation] h-BN上InAs量子細線の電気伝導特性 (2017)
  • Author(s): 鎌田大, R. S. Deacon, 松尾貞茂, 馬場翔二, K. Li, H. Q. Xu, 大岩顕, 樽茶清悟
  • Organizer: 日本物理学会2017年年次大会
  • Place of Presentation: 大阪大学
  • Year and Date: 2017-03-17
• [Presentation] 超伝導体とスピン分離した量子ホールバルク状態の接合におけるアンドレーエフ反射 (2017)
  • Author(s): 松尾貞茂
  • Organizer: 第8回トポロジー連携研究会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2017-01-06
  • Invited
• [Presentation] Experimental Observation of Andreev Reflection on Junctions of Spin-resolved Quantum Hall Bulk State and Superconductor (2017)
  • Author(s): Sadashige Matsuo, Kento Ueda, Shoji Baba, Hiroshi Kamata, Javad Shabani, Christopher Palmstrom, and Seigo Tarucha
  • Organizer: TOP-SPIN3 Spin and Topological Phenomena in Nanostrucutres-Towards Topological Materials Science
  • Int'l Joint Research / Invited
• [Presentation] Observation of Cooper pair splitting from superconductor to parallel coupled two InAs nanowires (2017)
  • Author(s): Sadashige Matsuo, S. Baba, C. Juenger, Y. Sato, K. Li, H.Q. Xu, C. Schonenberger, A. Oiwa, S. Tarucha
  • Organizer: 2nd Japan-China International Workshop on Quantum Technologies, Ito International Research Center, the University of Tokyo
  • Int'l Joint Research / Invited
• [Presentation] Experimental study of exotic transport in superconductor-semiconductor hybrid systems (2017)
  • Author(s): Sadashige Matsuo, Shoji Baba, Yosuke Sato, Kento Ueda, Hiroshi Kamata, Seigo Tarucha
  • Organizer: The second international conference on Quantum Information、Quantum Topological Orders and Emergent Spacetime on Quantum Simulators
  • Int'l Joint Research / Invited
• [Presentation] Andreev reflection in junctions of spin-resolved InAs quantum Hall bulk state and superconductor NbTi (2017)
  • Author(s): Sadashige Matsuo, Kento Ueda, Shoji Baba, Hiroshi Kamata, Javad Shabani, Christopher Palmstrom, and Seigo Tarucha
  • Organizer: 28th International Conference on Low Temperature Physics (LT28)
  • Int'l Joint Research
• [Presentation] Observation of quantum state transfer from polarized photons to electron spins using optical Pauli blockade effect (2017)
  • Author(s): K. Kuroyama, M. Larsson, S. Matsuo, T. Fujita, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
  • Organizer: 28th International Conference on Low Temperature Physics (LT28)
  • Int'l Joint Research
• [Presentation] Cooper pair splitter realized in superconductor-InAs double nanowire junctions (2017)
  • Author(s): Y. Sato, S. Baba, C. Juenger, S. Matsuo, H. Kamata, K. Li, H.Q. Xu, C. Schoenenberger, S. Tarucha
  • Organizer: International Conference on Topological Materials Science 2017 (TopoMat2017)
  • Int'l Joint Research
• [Presentation] Josephson radiation of InAs nanowire Josephson junctions (2017)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, S. Baba , K. Li, H. Q. Xu, K. Ishibashi, S. Tarucha
  • Organizer: 22nd International Conference on Electronic Properties of Two Dimensional Systems (EP2DS-22)/18th International Conference on Modulated Semiconductor Structures (MSS-18)
  • Int'l Joint Research
• [Presentation] Observation of Crossed Andreev Reflection on superconductor-InAs double nanowire junction device (2017)
  • Author(s): Y. Sato, S. Baba, C. Juenger, S. Matsuo, H. Kamata, K. Li, H.Q. Xu, C. Schoenenberger, S. Tarucha
  • Organizer: 22nd International Conference on Electronic Properties of Two Dimensional Systems (EP2DS-22)/18th International Conference on Modulated Semiconductor Structures (MSS-18)
  • Int'l Joint Research
• [Presentation] 偏光もつれ光子対から電子スピン対への量子もつれ相関の転写技術の開発とその実証 (2017)
  • Author(s): 松尾貞茂
  • Organizer: 第2期公募研究採択課題 研究計画発表会
• [Presentation] 並列二重InAsナノ細線と超伝導体アルミニウムの接合デバイスにおける電子輸送制御 (2017)
  • Author(s): 上田健人、松尾貞茂、鎌田 大、佐藤洋介、武重有祐、K. Li、S. Jeppesen、K. Deppert、 L. Samuelson、H. Q. Xu、樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用 PASPS-22
• [Presentation] InAs量子井戸にエッチング形成された1次元系の朝永―ラッティンジャー液体的性質 (2017)
  • Author(s): 佐藤洋介、松尾貞茂、上田健人、武重有祐、鎌田 大、J. S. Lee、B. Shojaei、 C. Palmstrom、都倉康弘、樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用 PASPS-22
• [Presentation] 偏光もつれ光子対による単一光子-電子対の生成 (2017)
  • Author(s): 黒山和幸、Marcus Larsson、松尾貞茂1、藤田高史、Sacha R. Valentin, Arne Ludwig, Andreas D. Wieck, 大岩 顕、樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用 PASPS-22
• [Presentation] InAs量子井戸/NbTi接合でのスピン分離した量子ホールバルク状態におけるア ンドレーエフ反射の観測 (2017)
  • Author(s): 松尾貞茂、上田健人、馬場翔二、鎌田 大、館野瑞樹、Javad Shabani、Chris J. Palmstrom、樽茶清悟
  • Organizer: 第22回スピン工学の基礎と応用 PASPS-22
• [Presentation] Al-InAs量子井戸から作製した超伝導接合の輸送特性.2 (2017)
  • Author(s): 松尾貞茂、館野瑞樹、馬場翔二、上田健人、佐藤洋介、鎌田大、Joon Sue Lee、Borzoyeh Shojaei、Christopher Palmstrom、樽茶清悟
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 並列二重InAsナノ細線と超伝導体の接合におけるクーパー対分離の観測 (2017)
  • Author(s): Y. Sato, S. Baba, C. Juenger, Sadashige Matsuo, A. Baumgatner,Hiroshi Kamata , K. Li, H.Q. Xu, C. Schonenberger, A. Oiwa, S. Tarucha
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] GaAs横型量子ドットにおける光学的スピン閉塞効果を用いた量子状態転写の実証.2 (2017)
  • Author(s): K. Kuroyama, Marcus Larsson, K.Yabe, Sadashige Matsuo, T.Fujita, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] Exclusive Excitation on Spin-Resolved Light Hole in a Gate Defined GaAs Quantum Dot (2017)
  • Author(s): S. Matsuo, K. Kuroyama, M. Larsson, K. Heya, T. Fujita, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 平成29年度スピン変換研究会
• [Presentation] Cooper pair splitting on a junction of an Al superconductor and InAs double-nanowire (2017)
  • Author(s): Y. Sato, S. Baba, C. Juenger, S. Matsuo, A. Baumgatner, H. Kamata, K. Li , H.Q. Xu, C. Schonenberger, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] Generation of a single electron-photon pair from a single polarization-entangled photon pair (2017)
  • Author(s): S. Matsuo, K. Kuroyama, M. Larsson, T. Fujita, S. R. Valentin, A. Ludwig, A. D. Wieck, A. Oiwa, S. Tarucha
  • Organizer: 7th Summer School on Semiconductor/Superconducting Quantum Coherence Effect and Quantum Information
• [Presentation] スピン分離した量子ホールバルク状態と超伝導体の接合におけるアンドレーエフ反射の観測 (2016)
  • Author(s): 松尾貞茂
  • Organizer: 第2回「トポロジーが紡ぐ物質科学のフロンティア」領域研究会(TMS2016)
  • Place of Presentation: 東北大学 片平さくらホール
  • Year and Date: 2016-12-16
  • Invited
• [Presentation] Equal-spin Andreev Reflection between Spin-resolved Quantum Hall Bulk State and Superconductor (2016)
  • Author(s): S. Matsuo, K. Ueda, S. Baba, H. Kamata, M. Tateno, J. Shabani, C. J. Palmstrom, and S. Tarucha
  • Organizer: International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSM)
  • Place of Presentation: Takeda Hall, The University of Tokyo, Tokyo, Japan
  • Year and Date: 2016-10-12
  • Int'l Joint Research
• [Presentation] 30.K. Kuroyama, M. Larsson, T. Fujita, S. Matsuo, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha (2016)
  • Author(s): K. Kuroyama, M. Larsson, T. Fujita, S. Matsuo, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
  • Organizer: International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSM)
  • Place of Presentation: Takeda Hall, The University of Tokyo, Tokyo, Japan
  • Year and Date: 2016-10-12
  • Int'l Joint Research
• [Presentation] Transport properties of InAs nanowires on hexagonal boronnitride (2016)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, A. Oiwa, S. Tarucha
  • Organizer: International workshop on nano-spin conversion science & quantum spin dynamics (NSCS-QSM)
  • Place of Presentation: Takeda Hall, The University of Tokyo, Tokyo, Japan
  • Year and Date: 2016-10-12
  • Int'l Joint Research
• [Presentation] グラフェン量子ホール状態におけるpn接合でのショット雑音 (2016)
  • Author(s): 松尾貞茂、竹下俊平、田中崇弘、中払周、塚越一仁、森山貴広、小野輝男、小林研介
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学
  • Year and Date: 2016-09-13
• [Presentation] Al-InAs量子井戸ヘテロ構造から作製した超伝導接合の輸送特性 (2016)
  • Author(s): 松尾貞茂, 馬場翔司, 上田健人, 鎌田大, 館野瑞樹, Joon Sue Lee, Borzoyeh Shojaei, Chris Palmstrom, 樽茶清悟
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学
  • Year and Date: 2016-09-13
• [Presentation] GaAs横型量子ドットにおける光学的スピン閉塞効果を用いた量子状態転写の実証 (2016)
  • Author(s): Marcus Larsson, 黒山和幸, 松尾貞茂, 藤田高史, Sascha R. Valentin, Arne Ludwig, Andreas D. Wieck, 大岩顕, 樽茶清悟
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学
  • Year and Date: 2016-09-13
• [Presentation] 架橋型InAs量子細線におけるバリスティック伝導特性 (2016)
  • Author(s): 鎌田大, R. S. Deacon, 松尾貞茂, 馬場翔二, K. Li, H. Q. Xu, 大岩顕, 樽茶清悟
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学
  • Year and Date: 2016-09-13
• [Presentation] Edge mixing dynamics in s quantum Hall pn junction of graphene (2016)
  • Author(s): Sadashige Matsuo, Shunpei Takeshita, Takahiro Tanaka, Shu Nakaharai, Kazuhito Tsukagoshi, Takahiro Moriyama, Teruo Ono, Kensuke Kobayashi
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe International Conference Center, Kobe, Japan
  • Year and Date: 2016-08-08
  • Int'l Joint Research
• [Presentation] Anomalous reduction of plateau conductance with in-plane magnetic field in InAs quantum wires (2016)
  • Author(s): S. Matsuo, H. Kamata, S. Baba, R. Deacon, J. Shabani, C. Palmstrom, S. Tarucha
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe International Conference Center, Kobe, Japan
  • Year and Date: 2016-08-08
  • Int'l Joint Research
• [Presentation] Transport property of parallel double quantum dots formed in InAs double-nanowire junctions (2016)
  • Author(s): S. Baba, H. Kamata, S. Matsuo, R.S.Deacon, A.Oiwa , K. Li , H.Q. Xu, S.Tarucha
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe International Conference Center, Kobe, Japan
  • Year and Date: 2016-08-08
  • Int'l Joint Research
• [Presentation] Observation of quantum state transfer from single polarized photons to single electron spins using optical Pauli blockade effect (2016)
  • Author(s): M.Larsson, K. Kuroyama, S.Matsuo, T.Fujita, S.R.Valentin, A.Ludwig, A.Wieck, A.Oiwa, S.Tarucha
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe International Conference Center, Kobe, Japan
  • Year and Date: 2016-08-08
  • Int'l Joint Research
• [Presentation] Single-electron charge sensing in InAs self-assembled quantum dots (2016)
  • Author(s): H. Kiyama, T. Hirayama, R. Shikishima, S. Matsuo, S. Baba, N. Nagai, K. Hirakawa, S. Tarucha, A. Oiwa
  • Organizer: 9th International Conference on Physics and Applications of Spin-Related Phenomena in Solids (PASPS9)
  • Place of Presentation: Kobe International Conference Center, Kobe, Japan
  • Year and Date: 2016-08-08
  • Int'l Joint Research
• [Presentation] Generation of single photon-electron pairs from single entangled photon pairs (2016)
  • Author(s): K. Kuroyama, M. Larsson, T. Fujita, S. Matsuo, S. R. Valentin, A. Ludwig, A. Wieck, A. Oiwa, S.Tarucha
  • Organizer: the 33th International Conference on the Physics of Semiconductors(ICPS2016),
  • Place of Presentation: Beijing International Convention Center, Beijing China
  • Year and Date: 2016-07-31
  • Int'l Joint Research
• [Presentation] Transport properties of suspended InAs nanowires with short junctions (2016)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, A. Oiwa, and S. Tarucha
  • Organizer: the 33th International Conference on the Physics of Semiconductors(ICPS2016)
  • Place of Presentation: Beijing International Convention Center, Beijing China
  • Year and Date: 2016-07-31
  • Int'l Joint Research
• [Presentation] Andreev Reflection at a Junction of Spin-resolved Quantum Hall State and Superconductor (2016)
  • Author(s): Sadashige Matsuo, Kento Ueda, Shoji Baba, Hiroshi Kamata, Javad Shabani, Christopher Palmstrom, Seigo Tarucha
  • Organizer: The 22nd International Conference on High Magnetic Fieldes in Semiconductor Physics (HMF22)
  • Place of Presentation: Jozankei View Hotel, Sapporo, Japan
  • Year and Date: 2016-07-24
  • Int'l Joint Research
• [Presentation] Ballistic electron transport in suspended InAs nanowires (2016)
  • Author(s): H. Kamata, R. S. Deacon, S. Matsuo, S. Baba, K. Li, H. Q. Xu, A. Oiwa, S. Tarucha
  • Organizer: CIQM Frontiers in Quantum Materials and Devices Workshop
  • Place of Presentation: Riken Wako, Saitama, Japan
  • Year and Date: 2016-06-13
  • Int'l Joint Research
• [Presentation] ２次元トポロジカル絶縁体と超伝導体の接合におけるスピン依存伝導 (2016)
  • Author(s): 松尾貞茂
  • Organizer: 新学術領域「トポロジーが紡ぐ物質科学のフロンティア」公募班キックオフミーティング
  • Place of Presentation: 京都大学理学研究科5号館
• [Remarks] http://www.meso.t.u-tokyo.ac.jp/
• [Remarks] 自己形成InAs二重量子ドットでのクーパー対分離と非局所量子もつれ対
  • URL: http://www.meso.t.u-tokyo.ac.jp/
• [Remarks] トポロジカル相のメゾスコピック輸送現象
  • URL: http://www.meso.t.u-tokyo.ac.jp/