Superfluidity of zero-point vacancies in two-dimensional solid helium-4

• Project/Area Number: 21740264
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Muroran Institute of Technology (2012); Keio University (2009-2011)
• Principal Investigator: SHIBAYAMA Yoshiyuki 室蘭工業大学, 工学研究科, 准教授 (20327688)
• Project Period (FY): 2009 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 超低温・量子凝縮系 / 超流動 / 固体の超流動 / 2次元ヘリウム4 / 量子固体 / 非古典的回転慣性 / ねじれ振り子 / ボース凝縮 / 零点空格子 / 2次元固体 / ねじれ振り子法 / 量子液体

Research Abstract

In order to investigate the novel superfluidity of the two-dimensional (2D) registered phase of 4^He on graphite and zero-point vacancies in bosonic quantum crystals, areal density dependence and critical velocity of non-classical rotational inertia (NCRI) in 4He films adsorbed on Grafoil were performed by a torsional oscillator method. I obtained the phase diagram of 2D 4He and discovered a finite NCRI appeared in only vicinity of the registered phase.

Research Products

• [Journal Article] Torsional oscillator experiment on superfluid 4He confined in a porous alumina nanopore array (2012)
  • Author(s): S Murakawa, R Higashino, K Yoshimura, Y Chikazawa, T Tanaka, K Kuriyama, K Honda, Y Shibayama and K Shirahama
  • Journal Title: Journal of Physics: Conference Series Volume: 400 Issue: 1 Pages: 0120531-4
  • DOI: 10.1088/1742-6596/400/1/012053
  • Peer Reviewed
• [Journal Article] Anomalous Response of 4He Confined in Nanoporous Media to Torsional Oscillation (2012)
  • Author(s): Hitomi Yoshimura, Rama Higashino, Yoshiyuki Shibayama, Keiya Shirahama
  • Journal Title: Journal of Low Temperature Physics Volume: 169 Issue: 3-4 Pages: 218-227
  • DOI: 10.1007/s10909-012-0687-3
  • Peer Reviewed
• [Journal Article] Layer by Layer Growth of Solid 4He on Graphite down to 0.1 K (2012)
  • Author(s): Aaron M.Koga, Yoshiyuki Shibayama, Keiya Shirahama
  • Journal Title: Journal of Low Temperature Physics Volume: 166 Issue: 5-6 Pages: 257-267
  • DOI: 10.1007/s10909-011-0452-z
  • Peer Reviewed
• [Journal Article] Suppression of Superfluidity of 4He in a Nanoporous Glass by Preplating a Kr Layer (2011)
  • Author(s): Yoshiyuki Shibayama, Keiya Shirahama
  • Journal Title: Journal of the Physical Society of Japan Volume: 80 Issue: 8 Pages: 0846041-10
  • DOI: 10.1143/jpsj.80.084604
  • NAID: 40018947227
  • Peer Reviewed
• [Journal Article] Torsional Oscillator Studies for Possible Supersolidity in Two-Dimensional ^4He Solid (2009)
  • Author(s): Yoshiyuki Shibayama, Hiroshi Fukuyama, Keiya Shirahama
  • Journal Title: Journal of Physics : Conference Series 150 Pages: 0320961-4
  • Peer Reviewed
• [Presentation] Non-classical rotational inertia of two-dimensional 4^He solid on graphite and proposal for the possible phase diagram (2012)
  • Author(s): Y. Shibayama
  • Organizer: Korea-Japan Solid Helium Workshop 2010
  • Place of Presentation: KAIST (South Korea)
  • Year and Date: 2012-12-21
• [Presentation] Phase diagram and supersolid-like behavior of two-dimensional 4^He films on graphite (2012)
  • Author(s): Y. Shibayama
  • Organizer: Supersolidity in Nature
  • Place of Presentation: RIKEN
  • Year and Date: 2012-06-11
• [Presentation] グラファイト表面の^4He薄膜の非古典的回転慣性 (2012)
  • Author(s): 柴山義行, 福山寛, 白浜圭也
  • Organizer: 物性研究所短期研究会「量子凝縮系におけるdefectsとtopology」
  • Place of Presentation: 東京大学物性研究所(千葉県)
  • Year and Date: 2012-01-06
• [Presentation] Phase diagram and supersolid-like behavior of two-dimensional 4He films on graphite (2012)
  • Author(s): Yoshiyuki Shibayama
  • Organizer: Supersolidity in Nature
  • Place of Presentation: RIKEN
• [Presentation] グラファイト上の2次元^4He固体における超流動的振る舞いの速度依存性 (2011)
  • Author(s): 柴山義行, 福山寛, 白浜圭也
  • Organizer: 26th International Conference on Low Temperature Physics (LT26)
  • Place of Presentation: 富山大五福キャンパス(富山県)
  • Year and Date: 2011-09-24
• [Presentation] Hysteresis of non-classical rotational inertia in two-dimensional 4He films on graphite (2011)
  • Author(s): Y. Shibayama, H. Fukuyama and K. Shirahama
  • Organizer: New Frontiers of Low Temperature Physics (ULT 2011)
  • Place of Presentation: KAIST (South Korea)
  • Year and Date: 2011-08-21
• [Presentation] Hysteresis of non-classical rotational inertia in two-dimensional ^4He films on graphite (2011)
  • Author(s): Y.Shibayama, H.Fukuyama, K.Shirahama
  • Organizer: New Frontiers of Low Temperature Physics (ULT 2011)
  • Place of Presentation: 韓国科学技術院(韓国大田広域市)
  • Year and Date: 2011-08-21
• [Presentation] Hysteresis of non-classical rotational inertia in 2D 4^He films on graphite (2011)
  • Author(s): Y. Shibayama, H. Fukuyama and K. Shirahama
  • Organizer: 26th International Conference on Low Temperature Physics (LT26)
  • Place of Presentation: Beijing International Convention Center (China)
  • Year and Date: 2011-08-11
• [Presentation] Hysteresis of non-classical rotational inertia in 2D ^4He films on graphite (2011)
  • Author(s): Y.Shibayama, H.Fukuyama, K.Shirahama
  • Organizer: 26th International Conference on Low Temperature Physics (LT26)
  • Place of Presentation: 北京国際会議中心(中国北京市)
  • Year and Date: 2011-08-11
• [Presentation] グラファイト表面の2次元^4He固体相における超流動的振る舞いの速度依存性 (2011)
  • Author(s): 柴山義行, 福山寛, 白浜圭也
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大五十嵐キャンパス(新潟県)
  • Year and Date: 2011-03-28
• [Presentation] Non-classical rotational inertia of two-dimensional ^4He solid on graphite and proposal for the possible phase diagram (2010)
  • Author(s): Y.Shibayama
  • Organizer: Korea-Japan Solid Helium Workshop 2010
  • Place of Presentation: 韓国科学技術院(韓国大田広域市)
  • Year and Date: 2010-12-21
• [Presentation] Suppression of Layer by Layer Growth of Solid ^4He on Graphite at Low Temperature (2010)
  • Author(s): A.M.Koga, Y.Shibayama, K.Shirahama
  • Organizer: Korea-Japan Solid Helium Workshop 2010
  • Place of Presentation: 韓国科学技術院(韓国大田広域市)
  • Year and Date: 2010-12-21
• [Presentation] Observation of non-classical rotational Inertia in two-dimensional 4^He solid on graphite surface (2010)
  • Author(s): Y. Shibayama, H. Fukuyama and K. Shirahama
  • Organizer: International Symposium on Quantum Fluids and Solids (QFS2010)
  • Place of Presentation: Grenoble World Trade Center (France)
  • Year and Date: 2010-08-05
• [Presentation] Observation of non-classical rotational inertia in two-dimensional ^4He solid on graphite surface (2010)
  • Author(s): Y.Shibayama, H.Fukuyama, K.Shirahama
  • Organizer: International Symposium on Quantum Fluids and Solids (QFS2010)
  • Place of Presentation: Grenoble World Trade Center (France)
  • Year and Date: 2010-08-05
• [Presentation] Layering transitions in solid ^4He growth on graphite (2010)
  • Author(s): A.M.Koga, Y.Shibayama, K.Shirahama
  • Organizer: International Symposium on Quantum Fluids and Solids (QFS2010)
  • Place of Presentation: Grenoble World Trade Center (France)
  • Year and Date: 2010-08-05
• [Presentation] Non-classical rotational inertia in two-dimensional 4^He solid due to zero-point vacancies (2010)
  • Author(s): Y. Shibayama
  • Organizer: Japan.Korea Workshop Quantum Phenomena in Helium
  • Place of Presentation: Keio University
  • Year and Date: 2010-06-25
• [Presentation] Non-Classical Rotational Inertia in Two-Dimensional ^4He Solid due to Zero-Point Vacancies (2010)
  • Author(s): Y.Shibayama
  • Organizer: Japan-Korea Workshop Quantum Phenomena in Helium
  • Place of Presentation: 韓国科学技術院(韓国大田広域市)
  • Year and Date: 2010-06-25
• [Presentation] Torsional Oscillator Study for ^4He Growth on Graphite (2010)
  • Author(s): A.M.Koga, Y.Shibayama, K.Shirahama
  • Organizer: Japan-Korea Workshop Quantum Phenomena in Helium
  • Place of Presentation: 韓国科学技術院(韓国大田広域市)
  • Year and Date: 2010-06-24
• [Presentation] グラファイト表面上の2次元4^He固体における非古典的回転慣性 (2010)
  • Author(s): 柴山義行, 福山寛, 白浜圭也
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス(岡山)
  • Year and Date: 2010-03-22
• [Presentation] Non-classical rotational inertia in two-dimensional 4^He solid on graphite (2010)
  • Author(s): Y. Shibayama
  • Organizer: International Symposium on Physics of New Quantum Phases in Superclean Materials (PSM2010)
  • Place of Presentation: Hamagin hall (Yokohama)
  • Year and Date: 2010-03-09
• [Presentation] Non-Classical Rotational Inertia in Two-Dimensional ^4He Solid on Graphite (2010)
  • Author(s): Yoshiyuki Shibayama, Hiroshi FukUyama, Keiya Shirahama
  • Organizer: International Symposium on Physics of Ncw Quantum Phases in Superclean Materials (PSM2010)
  • Place of Presentation: Hamagin hall(Yokohama, Kanagawa, Japan)
  • Year and Date: 2010-03-09
• [Presentation] Non-classical rotational inertia in two-dimensional 4^He solid prepared on graphite substrate (2009)
  • Author(s): Y. Shibayama
  • Organizer: Korea-Japan Solid Helium Workshop
  • Place of Presentation: KAIST (South Korea)
  • Year and Date: 2009-12-21
• [Presentation] Non-Classical Rotational Inertia in Two-Dimensional ^4He Solid Prepared on Graphite Substrate (2009)
  • Author(s): Yoshiyuki Shibayama
  • Organizer: Korea-Japan Solid Helium Workshop
  • Place of Presentation: Korea Advanced Institute of Science and Technology(Korea)
  • Year and Date: 2009-12-21
• [Presentation] Torsional oscillator studies of non-classical rotational inertia in two-dimensional 4^He solid (2009)
  • Author(s): Y. Shibayama, H. Fukuyama and K. Shirahama
  • Organizer: International Symposium on Quantum Fluids and Solids (QFS2009)
  • Place of Presentation: Northwestern University, (USA)
  • Year and Date: 2009-08-07
• [Presentation] Torsional Oscillator Studies of Non-Classical Rotational Inertia in Two-Dimensional ^4He Solid (2009)
  • Author(s): Yoshiyuki Shibayama, Hiroshi Fukuyama, Keiya Shirahama
  • Organizer: International Symposium on Quantum Fluids and Solids (QFS2009)
  • Place of Presentation: Northwestern Univ., Illinois, USA
  • Year and Date: 2009-08-07