Singlet Ground State and Spin Gap in S=1/2 Kagome Antiferromagnet Rb_2Cu_3SnF_<12>(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• We investigated the crystal structure of Rb_2Cu_3SnF_<12> and its magnetic properties using single crystals. This compound is composed of Kagome layers of corner-sharing CuF_6 octahedra with a 2a×2a enlarged cell as compared with the proper Kagome layer. RB_2Cu_3SnF_<12> is magnetically described as an S=1/2 modified Kagome antiferromagnet with four kinds of neighboring exchange interaction. From magnetic susceptibility and high-field magnetization measurements, it was found that the ground state is a disordered singlet with the spin gap, as predicted from a recent theory. Exact diagonalization for a 12-site Kagome cluster was performed to analyze the magnetic susceptibility, and individual exchange interactions were evaluated.

• 社団法人日本物理学会の論文
• 2008-04-15

著者

• NARUMI Yasuo

  Institute for Solid State Physics, University of Tokyo

• KINDO Koichi

  Institute for Solid State Physics, University of Tokyo

• Yasuo Narumi

  Institute For Solid State Physics University Of Tokyo

• Narumi Yasuo

  The Institute For Solid State Physics The University Of Tokyo

• Kindo K

  Advanced Science Research Center Japan Atomic Energy Agency

• Kindo K

  Institute For Solid State Physics The University Of Tokyo

• Kindo Koichi

  Institute For Solid State Physics University Of Tokyo

• Kindo K.

  Research Center For Materials Science At Extreme Conditions Osaka University

• TANAKA Hidekazu

  Department of Natural History Sciences, Faculty of Science, Hokkaido University

• 勝又 紘一

  理研播磨研

• 勝又 紘一

  Riken Spring-8 Center Harima Institute

• NARUMI Yasuo

  KYOKUGEN, Osaka University

• MORITA Katsuhiro

  Department of Physics, Tokyo Institute of Technology

• YANO Midori

  Department of Physics, Tokyo Institute of Technology

• ONO Toshio

  Department of Physics, Tokyo Institute of Technology

• FUJII Kotaro

  Department of Chemistry, Tokyo Institute of Technology

• UEKUSA Hidehiro

  Department of Chemistry, Tokyo Institute of Technology

• Kindo Koichi

  Research Center For Materials Science At Extreme Conditions Osaka University

• Kindo K

  Kyokugen Osaka University

• Kindo Koichi

  Japan Atomic Energy Agency

• Kishio K

  Inst. For Solid State Physics The Univ. Of Tokyo

• Narumi Yasuo

  Institute For Solid State Physics University Of Tokyo

• Kindo Koichi

  The Institute For Solid State Physics The University Of Tokyo

• NARUMI Yasuo

  Research Center for Materials Science at Extreme Conditions, Osaka University

• Tanaka H

  Nanotechnology Research Institute National Institute Of Advanced Industrial Science And Technology (

• Kodama Katsuaki

  Department Of Physics Division Of Material Science Nagoya University

• KOBAYASHI Keisuke

  Japan Synchrotron Radiation Research Institute/SPring-8

• Koyama K

  Institute For Solid State Physics University Of Tokyo

• Kinoshita K

  Ntt Basic Research Laboratory

• Kindo Koichi

  Institute For Solid State Physics The University Of Tokyo

• Hiraoka T

  Faculty Of Integrated Arts And Science Hiroshima University

• Kosuge Koji

  Department Of Chemistry Graduate School Of Science Kyoto University

• Fujii Kotaro

  Department Of Chemistry Tokyo Institute Of Technology

• Kato K

  Japan Synchrotron Radiation Research Institute/spring-8

• Kitazawa K

  Department Of Superconductivity University Of Tokyo

• Ono T

  Department Of Physics Tokyo Institute Of Technology

• Ono Toshio

  Department Of Oral Biochemistry Nagasaki University School Of Dentistry

• Uekusa H

  Department Of Chemistry And Materials Science Tokyo Institute Of Technology

• Uekusa H

  Department Of Chemistry Tokyo Institute Of Technology

• Morita Katsuhiro

  Department Of Physics Tokyo Institute Of Technology

• Yano Midori

  Department Of Physics Tokyo Institute Of Technology

• Takei Humihiko

  Institute For Iron Steel And Other Metals Tohoku University

• Kindo Koichi

  Faculty Of Science Osaka University

• Hiraoka T

  Faculty Of Science And Engineering Saga University

• Koga K

  Department Of Superconductivity University Of Tokyo

• Kishio Kohji

  Department Of Applied Chemistry University Of Tokyo:sorst Japan Science And Technology Corporation (

• Uekusa Hidehiro

  Department Of Chemistry And Material Science Tokyo Institute Of Technology

• Kitazawa K

  Univ. Tokyo Tokyo Jpn

• Kato K

  Riken:spring-8

• Tokoro Hiroko

  Department Of Chemistry School Of Science The University Of Tokyo

• TANAKA Hitoshi

  XFEL Project Head Office/RIKEN

• Tanaka Hidekazu

  Department Of Internal Medicine Iii Osaka Medical College

• Koyama Keiichi

  Tohoku Univ. Sendai Jpn

• Koyama Keiichi

  Institute For Solid State Physics University Of Tokyo

• Narumi Yasuo

  Tohoku Univ. Sendai Jpn

• Narumi Yasuo

  Institute For Materials Research Tohoku University

• Tanaka Hidekazu

  Department Of Earth And Planetary Sciences Faculty Of Science Tokyo Institute Of Technology

• Tanaka Hidekazu

  Department Of Chemistry And Chemical Biology Gunma University

• Fujii Kotaro

  Department of Chemistry and Materials Science, Tokyo Institute of Technology

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