High-Field ESR Measurements of $S=1/2$ Kagome Lattice Antiferromagnet BaCu3V2O8(OH)2
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概要
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High-field electron spin resonance (ESR) measurements have been performed on vesignieite BaCu3V2O8(OH)2, which is considered as a nearly ideal model substance of $S=1/2$ kagome antiferromagnet, in the temperature region from 1.9 to 265 K. The frequency region is from 60 to 360 GHz and the applied pulsed magnetic field is up to 16 T. Observed $g$-value and linewidth show the increase below 20 K, which suggest the development of the short range order. Moreover, a gapless spin liquid ground state is suggested from the frequency–field relation at 1.9 K.
- 2010-02-15
著者
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SAKURAI Takahiro
Center for Supports to Research and Education Activities, Kobe University
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OHTA Hitoshi
Graduate School of Science and Technology, Kobe University
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Hiroi Zenji
Institute For Chemical Research Kyoto University
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Okamoto Yoshihiko
Institute For Solid State Physics University Of Tokyo
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Yoshida Hiroyuki
Institute For Solid State Physics University Of Tokyo
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Fujisawa Masashi
Molecular Photoscience Research Center, Kobe University, Kobe 657-8501, Japan
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Zhang Wei-min
Graduate School of Science, Kobe University, Kobe 657-8501, Japan
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Okubo Susumu
Graduate School of Science, Kobe University, Kobe 657-8501, Japan
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Sakurai Takahiro
Center for Support to Research and Education Activities, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe 657-8501, Japan
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Sakurai Takahiro
Center for Supports to Research and Education Activities, Kobe University, Kobe 657-8501, Japan
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Fujisawa Masashi
Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada, Kobe 657-8501, Japan
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Ohta Hitoshi
Graduate School of Science, Kobe University, Kobe 657-8501, Japan
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Okubo Susumu
Graduate School of Engineering, Tottori University, Tottori 680-8552, Japan
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