Mott transition from a spin liquid to a fermi liquid in the spin-frustrated organic conductor κ-(ET)2Cu2(CN)3 -: art. no. 177001

被引：291
|
作者：
Kurosaki, Y [1 ]
Shimizu, Y
Miyagawa, K
Kanoda, K
Saito, G
机构：
[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[2] Kyoto Univ, Div Chem, Sakyo Ku, Kyoto 6068502, Japan
[3] Japan Sci & Technol Corp, CREST, Kawaguchi 3320012, Japan
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.95.177001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The pressure-temperature phase diagram of the organic Mott insulator kappa-(ET)(2)Cu-2(CN)(3), a model system of the spin liquid on triangular lattice, has been investigated by H-1 NMR and resistivity measurements. The spin-liquid phase is persistent before the Mott transition to the metal or superconducting phase under pressure. At the Mott transition, the spin fluctuations are rapidly suppressed and the Fermi-liquid features are observed in the temperature dependence of the spin-lattice relaxation rate and resistivity. The characteristic curvature of the Mott boundary in the phase diagram highlights a crucial effect of the spin frustration on the Mott transition.
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页数：4
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