Development of Milli-Kelvin Micro-Four-Point Probe Method andResearch of Monolayer Superconductors

2012 Fiscal Year Final Research Report

• Project/Area Number: 22246006
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: The University of Tokyo
• Principal Investigator: HASEGAWA Shuji 東京大学, 大学院・理学系研究科, 教授 (00228446)
• Co-Investigator(Kenkyū-buntansha): HIRAHARA Toru 東京大学, 大学院・理学系研究科, 助教 (30451818)
• Project Period (FY): 2010 – 2012
• Keywords: 超伝導 / マイクロ4端子プローブ / モノレイヤー / 表面状態超伝導 / 表面超構造

Research Abstract

We have developed a novel experimental tool called ‘micro-four-point probe method’ for more than ten years, and applied it to studies on electrical conduction at crystal surfaces and monolayers. In this study, we have intended that the method is expended in the temperature range down to milli-Kelvin (0.4 K) and also with strong magnetic field (up to 7 T) so that we can explore the studies on monolayer superconductivity/surface-state superconductivity and the magneto-transport properties of surfaces/monolayers.

Research Products

• [Journal Article] Magnetotransport measurements of a super-conducting surface state of In- and Pb-induced structures on Si(111) (2013)
  • Author(s): M. Yamada, T. Hirahara, and S. Hasegawa
  • Journal Title: Physical Review Letters, Volume: 110 Pages: 237001-1-5
  • Peer Reviewed
• [Journal Article] Evidence of Dirac Fermions in Multilayer Silicene (2013)
  • Author(s): P. De Padova, P. Vogt, A. Resta, J. Avila, I. Razado-Colambo, C. Quaresima, C. Ottaviani, B. Olivieri, T. Bruhn, T. Hirahara, T. Shirai, S. Hasagawa, M. C. Asensio, and G. Le Lay
  • Journal Title: Applied Physics Letters Volume: 102 Pages: 163106-1-5
  • Peer Reviewed
• [Journal Article] Hydrogen-induced surface metallization of SrTiO3(001) (2012)
  • Author(s): M. D'Angelo, R. Yukawa, K. Ozawa, S. Yamamoto, T. Hirahara, S. Hasegawa, M.G. Silly, F. Sirotti, and I. Matsuda
  • Journal Title: PhysicalReview Letters Volume: 108 Pages: 116802-1-5
  • Peer Reviewed
• [Journal Article] Atomic and Electronic Structure of Ultrathin Bi(111) Films Grown on Bi2Te3(111) Substrates: Evidence for a Strain-Induced Topological Phase Transition (2012)
  • Author(s): T. Hirahara, N. Fukui, T. Shirasawa, M. Yamada, M. Aitani, H. Miyazaki, M. Matsunami, S. Kimura, T. Takahashi, S. Hasegawa, and K. Kobayashi
  • Journal Title: Physical Review Letters Volume: 109 Pages: 227401-1-5
  • Peer Reviewed
• [Journal Article] Surface Relaxation of Topological Insulators: Influence on the Electronic Structure (2012)
  • Author(s): N. Fukui, T. Hirahara, T. Shirasawa, T. Takahashi, K. Kobayashi, and S. Hasegawa
  • Journal Title: Physical Review B Volume: 85 Pages: 115426-1-5
  • Peer Reviewed
• [Journal Article] Anisotropic conductivity of the Si(111)4×1-In surface: Transport mechanism determined by the temperature dependence (2012)
  • Author(s): T. Uetake, T. Hirahara, Y. Ueda, N. Nagamura, R. Hobara, and S. Hasegawa
  • Journal Title: Physical Review B Volume: 86 Pages: 035325-1-5
  • Peer Reviewed
• [Journal Article] Atomic structure of two-dimensional binarysurface alloy: Si(111)-√21×√21 superstructure (2012)
  • Author(s): Y. Fukaya, I. Matsuda, M. Hashimoto, K. Kubo, T. Hirahara, W. H. Choi, H. W. Yeom, S. Hasegawa, A. Kawasuso, and A. Ichimiya
  • Journal Title: Surface Science Volume: 606 Pages: 919-923
  • Peer Reviewed
• [Journal Article] Atomic and Electronic Structures of Si(111)-√21×√21Superstructure (2012)
  • Author(s): Y. Fukaya, K. Kubo, T. Hirahara, S. Yamazaki, W. H. Choi, H. W. Yeom, A. Kawasuso, S. Hasegawa, and I. Matsuda
  • Journal Title: e-Journal of Surface Science and Nanotechnology Volume: 10 Pages: 310-314
  • Peer Reviewed
• [Journal Article] Surface Electrical Conductivity Measurement System with Micro-Four-Point Probes at Sub-Kelvin Temperature under High Magnetic Field in Ultrahigh Vacuum (2012)
  • Author(s): M. Yamada, T. Hirahara, S. Hasegawa, H. Mizuno, Y. Miyatake, and T. Nagamura
  • Journal Title: e-Journal of Surface Science and Nanotechnology Volume: 10 Pages: 400-405
  • Peer Reviewed
• [Journal Article] Metallic Transport in a Monatomic Layer of In on a Silicon Surface (2011)
  • Author(s): S. Yamazaki, Y. Hosomura, I. Matsuda, R.Hobara, T. Eguchi, Y. Hasegawa, and S. Hasegawa
  • Journal Title: Physical Review Letters Volume: 106 Pages: 116802-1-5
  • Peer Reviewed
• [Journal Article] Interfacing 2D and 3D topological insulators: Bi(111) bilayer on Bi2Te3 (2011)
  • Author(s): T. Hirahara, G. Bihlmayer, Y. Sakamoto, M. Yamada, H. Miyazaki, S. Kimura, S. Bl¨uge, and S. Hasegawa
  • Journal Title: Physical Review Letters Volume: 107 Pages: 166801-1-5
  • Peer Reviewed
• [Journal Article] Development of a surface magneto-transport measurement system with multi-probes and the in situ measurement ofBi nanofilms prepared on Si(111)7×7 (2011)
  • Author(s): N. Miyata, R. Hobara, H. Narita, T. Hirahara, S. Hasegawa, and I. Matsuda
  • Journal Title: Japanese Journal of Applied Physics Volume: 50 Pages: 036602
  • Peer Reviewed
• [Journal Article] Enhanced spin relaxation in a quantum metal film by the Rashba-type surface (2011)
  • Author(s): N. Miyata, H. Narita, M. Ogawa, A. Harasawa, R. Hobara, T. Hirahara, P. Moras, D.Topwal, C.Carbone, S.Hasegawa, and I. Matsuda
  • Journal Title: Physical Review B 8 Volume: 3 Pages: 195305-1-6
  • Peer Reviewed
• [Journal Article] Magnetic anisotropy of Co ultrathin films (2011)
  • Author(s): Y. Saisyu, T. Hirahara, R. Hobara, and S. Hasegawa
  • Journal Title: Journal of Applied Physics Volume: 110 Pages: 053902-1-6
  • Peer Reviewed
• [Journal Article] A topological metalat the surface of an ultrathin Bi1-xSbx alloy film (2010)
  • Author(s): T .Hirahara, Y. Sakamoto, Y. Saisyu, H. Miyazaki, S. Kimura, T. Okuda, I. Matsuda, S. Murakami, and S. Hasegawa
  • Journal Title: Physical Review B Volume: 81 Pages: 165422-1-6
  • Peer Reviewed
• [Journal Article] Spectroscopic evidence of a topological quantum phase transition in ultrathin Bi2Se3 films (2010)
  • Author(s): Y. Sakamoto, T. Hirahara, H. Miyazaki, S. Kimura, and S. Hasegawa
  • Journal Title: Physical Review B Volume: 81 Pages: 165432-1-5
  • Peer Reviewed
• [Journal Article] Conductance transition and interwire ordering of Pb nanowires on Si(557) (2010)
  • Author(s): H. Morikawa, K. S. Kim, H. W. Yeom, Y. Kitaoka, T. Hirahara, and S. Hasegawa
  • Journal Title: Physical Review B Volume: 82 Pages: 045423-1-5
  • Peer Reviewed
• [Journal Article] Development of an UHV-SMOKE system using permanent magnets (2010)
  • Author(s): Y. Niinuma, Y. Saisyu, T. Hirahara, R. Hobara, S. Hasegawa, H. Mizuno, and T. Nagamura
  • Journal Title: e-Journal of Surface Science and Nanotechnology Volume: 8 Pages: 298-302
  • Peer Reviewed
• [Journal Article] Anomalous transport in an n-type topological insulator ultrathin Bi2Se3 film (2010)
  • Author(s): T. Hirahara, Y. Sakamoto, Y. Takeichi, H. Miyazaki, S. Kimura, I. Matsuda, A. Kakizaki, S. Hasegawa
  • Journal Title: Physical Review B Volume: 82 Pages: 155309-1-5
  • Peer Reviewed
• [Journal Article] Electron compound nature in a surface atomic layer of two-dimensional hexagonal lattice (2010)
  • Author(s): I. Matsuda, K. Kubo, T. Hirahara, S. Yamazaki, W. H. Choi, H. W. Yeom, H. Narita, Y.Fukaya, M. Hashimoto, A. Kawasuso, S. Hasegawa, and K. Kobayashi
  • Journal Title: Physical Review B Volume: 82 Pages: 165330-1-6
  • Peer Reviewed
• [Presentation] 物質最表面での新機能の発現 (2013)
  • Author(s): 長谷川修司
  • Organizer: 第60回応用物理学会春季学術講演会シンポジウム「機能性ナノマテリアルは持続可能社 会をいかに支えるか」
  • Place of Presentation: 神奈川工科大学, 本厚木)
  • Year and Date: 2013-03-27
• [Presentation] シリセン吸着Ag 超薄膜の量子井戸の研究 (2013)
  • Author(s): 白井皓寅、 平原徹、長谷川 修司
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学, 東広島
  • Year and Date: 2013-03-27
• [Presentation] ビスマス 超薄膜の超高真空・低温・強磁場中における電気伝導測定 (2013)
  • Author(s): 相谷昌紀, 平原徹 , 長谷川修司
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学, 東広島
  • Year and Date: 2013-03-26
• [Presentation] Topological and super- conducting surface states, Workshop of DFG- and NOW- Research Units FOR 1700 (2013)
  • Author(s): S. Hasegawa
  • Organizer: FOR 1162 and FOM on Physics at the borderline between 1D and 2D
  • Place of Presentation: Bad Honnef, Germany
  • Year and Date: 2013-02-14
• [Presentation] 非磁性物質表面でのスピン 分裂とスピン輸送 (2013)
  • Author(s): 長 谷 川 修 司
  • Organizer: 第20回大阪電気通信大 学エレクトロニクス基礎研究所シンポジウ ム「スピントロニクスマテリアルの新しい展開」
  • Place of Presentation: 大阪電通大駅前キ ャンパス
  • Year and Date: 2013-01-11
• [Presentation] Comprehensive study of topological phase transitions using ultrathin films (2013)
  • Author(s): T. Hirahara
  • Organizer: Energy Materials Nanotechnology (EMN) Wes
  • Place of Presentation: Houston, USA
  • Year and Date: 2013-01-07
• [Presentation] Surface-state superconduc- tivity measured by a UHV sub-kelvin micro-four-point-probe system under high magnetic field (2012)
  • Author(s): M. Yamada, T. Hirahara, R. Hobara, S. Hasegawa
  • Organizer: The 10th Japan-RussiaSeminar on Semiconductor Surfaces (JRSSS10)
  • Place of Presentation: 東京大 学, 本郷
  • Year and Date: 20120926-0928
• [Presentation] 表面状態超伝導の観測 (2012)
  • Author(s): 山田学、平原徹、保原麗、 長谷 川修司
  • Organizer: 平成24年度東北大学通研プロジェクト研究会
  • Place of Presentation: 茂庭荘, 宮城
  • Year and Date: 2012-12-14
• [Presentation] 超薄 膜の低温・磁場中での表面電気伝導測定 (2012)
  • Author(s): 相谷昌紀、 平原徹、長谷川修司 , Bi
  • Organizer: 第32回表面科学学術講演会
  • Place of Presentation: 東北大学
  • Year and Date: 2012-11-21
• [Presentation] Surface nanomaterials: Low dimensional, spin-split, and super- conducting, The 2nd International School on Surface Science (2012)
  • Author(s): S. Hasegawa
  • Organizer: Technologies and Measurements on Atomic Scale
  • Place of Presentation: Sochi, Russia
  • Year and Date: 2012-10-06
• [Presentation] 集束イオ ンビームによるin situ 微細加工を施した表面の電位伝導特性 (2012)
  • Author(s): 福居直哉、 平原徹、長谷川 修司
  • Organizer: 日本物理学会 2012 年秋季大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 2012-09-18
• [Presentation] 多探針測定技術による半導 体・ナノワイヤの電気計測とロードマップ (2012)
  • Author(s): 長 川修司
  • Organizer: 学振ナノプローブテクノロジー167委員会第67回研究会
  • Place of Presentation: NIMS, 筑波
  • Year and Date: 2012-07-18
• [Presentation] Charge and Spin Trans- port at Nonmagnetic Surfaces (2012)
  • Author(s): T. Hirahara
  • Organizer: Inter- national Conference of Young Researcherson Advanced Materials (ICYRAM)
  • Place of Presentation: Singapore
  • Year and Date: 2012-07-03
• [Presentation] In, Pb モノレイヤー超伝導体の超伝導転移およ び臨界磁場測定 (2012)
  • Author(s): 山田学, 平原徹 ,保原麗, 長 谷川修 司
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-25
• [Presentation] Ultrathin films of topological insulators (2012)
  • Author(s): T. Hirahara
  • Organizer: The first SRC Winter Workshop on Topological Matter
  • Place of Presentation: Phoenix Park, Korea
  • Year and Date: 2012-01-30
• [Presentation] Monolayer superconductivity measured by a UHV sub-Kelvin micro-four- point-probe system under high magnetic field (2012)
  • Author(s): M. Yamada, T. Hirahara, R. Hobara, S. Hasegawa
  • Organizer: Symposium on Surface and Nano Science (SSNS)
  • Place of Presentation: 雫石
  • Year and Date: 2012-01-10
• [Presentation] トポロジカル絶縁体超薄膜の電子状態と輸送特性 (2011)
  • Author(s): 平 原 徹
  • Organizer: 第31回表面科学学術講演会
  • Place of Presentation: 船堀, 東京
  • Year and Date: 2011-12-16
• [Presentation] FIB 複合型低温独立駆動4探針STMの開発 (2011)
  • Author(s): 福居直哉, 保原麗, 東野剛之, 植竹智哉,上田洋一, 永村直佳, 平原徹 , 長村俊彦, 長 谷川修司
  • Organizer: 第31回日本表面科学会学術講演会
  • Place of Presentation: 船堀, 東京
  • Year and Date: 2011-12-14
• [Presentation] Electronic and spin transport at surfaces-Strong Electron-Phonon-/Spin-Orbit-Couplings Materials- (2011)
  • Author(s): S. Hasegawa
  • Organizer: The 6th International Symposium on Surface Science (ISSS-6)
  • Place of Presentation: 船堀, 東京
  • Year and Date: 2011-12-14
• [Presentation] モ ノレイヤー超伝導の検出-In/Si(111) - (2011)
  • Author(s): 山田学、 平原徹 、保原麗、 長 谷 川 修 司
  • Organizer: 平 成23年度通研共同プロジェクト研究「ナノ スケールのゆらぎ・電子相関制御に基づく新 規ナノデバイス」
  • Place of Presentation: 仙台
  • Year and Date: 2011-10-21
• [Book] Christian Joachim (2012)
  • Author(s): S. Hasegawa, T. Hirahara, Y. Kitaoka, S. Yoshimoto, T. Tono, and T. Ohta
  • Total Pages: 153-165
  • Publisher: Nanometer-Scale Four-Point Probe Resistance Measurements of Individual Nanowires by Four-Tip STM, in Atomic Scale Interconnection Machines, ed.
• [Book] Elton N. Kaufmann (2012)
  • Author(s): S. Hasegawa
  • Total Pages: 1925-1938
  • Publisher: Reflection High-Energy Electron Diffraction, in Characterization of Materials, ed.
• [Book] 電子的・電気的特性 (第3 章)in 表面物性の基礎(現代表面科学シリーズ) (2012)
  • Author(s): 長谷川修司
  • Publisher: 日本表面科学会編集 (共立)
• [Remarks]
  • URL: http://www-surface.phys.s.u-tokyo.ac.jp