Magnetization “Steps” on a Kagome Lattice in Volborthite
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概要
- 論文の詳細を見る
Magnetic properties of the spin-1/2 kagome-like compound volborthite are studied using a high-quality polycrystalline sample. It is evidenced from magnetization and specific heat measurements that the spins on the kagome lattice still fluctuate at low temperature, down to $T=60$ mK that corresponds to 1/1500 of the nearest-neighbor antiferromagnetic interaction, exhibiting neither a conventional long-range order nor a spin gap. In contrast, 51V NMR experiments revealed a sharp peak at 1 K in relaxation rate, which indicates that a certain exotic order occurs. Surprisingly, we have observed three “steps” in magnetization as a function of magnetic field, suggesting that at least four liquid-like or other quantum states exist under magnetic fields.
- 2009-04-15
著者
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Kindo Koichi
Institute For Solid State Physics The University Of Tokyo
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Tokunaga Masashi
Institute For Solid State Physics University Of Tokyo
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Hiroi Zenji
Institute For Chemical Research Kyoto University
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Takigawa Masashi
Institute For Solid State Physics Iniversity Of Tokyo
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Sakakibara Toshiro
Institute For Solid State Physics The University Of Tokyo
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Tayama Takashi
Institute For Solid State Physics University Of Tokyo
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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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Yoshida Makoto
Institute For Materials Reserch
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Matsuo Akira
Institute For Chemical Research Kyoto University
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Narumi Yasuo
Institute For Materials Research Tohoku University
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Narumi Yasuo
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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Sakakibara Toshiro
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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Takigawa Masashi
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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Tayama Takashi
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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Okamoto Yoshihiko
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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Tokunaga Masashi
Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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Yoshida Makoto
Institute for Materials Research, Tohoku University, Sendai 980-8577
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