Mott transition from a spin liquid to a Fermi liquid in the spin-frustrated organic conductor kappa-(ET)2Cu2(CN)3.
作者： Y. Kurosaki , Y. Shimizu , K. Miyagawa , K. Kanoda , G. Saito
DOI: 10.1103/PHYSREVLETT.95.177001
关键词: Mott transition 、 Fermi liquid theory 、 Condensed matter physics 、 Materials science 、 Quantum spin liquid 、 Spin crossover 、 Phase diagram 、 Metal–insulator transition 、 Mott insulator 、 Strongly correlated material
摘要: The pressure-temperature phase diagram of the organic Mott insulator kappa-(ET)2Cu2(CN)3, a model system spin liquid on triangular lattice, has been investigated by 1H NMR and resistivity measurements. spin-liquid is persistent before transition to metal or superconducting under pressure. At transition, fluctuations are rapidly suppressed Fermi-liquid features observed in temperature dependence spin-lattice relaxation rate resistivity. characteristic curvature boundary highlights crucial effect frustration transition.
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sci-hub.se 参考文章(29)
Hiori Kino, Hidetoshi Fukuyama, Electronic States of Conducting Organic κ-(BEDT-TTF)2X Journal of the Physical Society of Japan. ,vol. 64, pp. 2726- 2729 ,(1995) , 10.1143/JPSJ.64.2726
Olexei I. Motrunich, Variational study of triangular lattice spin-1/2 model with ring exchanges and spin liquid state in kappa-(ET)2Cu2(CN)3 Physical Review B. ,vol. 72, pp. 045105- ,(2005) , 10.1103/PHYSREVB.72.045105
Tokutaro Komatsu, Nozomu Matsukawa, Takeharu Inoue, Gunzi Saito, None, Realization of Superconductivity at Ambient Pressure by Band-Filling Control in κ- (BEDT-TTF)2Cu2(CN)3 Journal of the Physical Society of Japan. ,vol. 65, pp. 1340- 1354 ,(1996) , 10.1143/JPSJ.65.1340
Shinji Watanabe, Masatoshi Imada, Thermodynamic Relations in Correlated Systems Journal of the Physical Society of Japan. ,vol. 73, pp. 3341- 3350 ,(2004) , 10.1143/JPSJ.73.3341
F. Kagawa, T. Itou, K. Miyagawa, K. Kanoda, Transport criticality of the first-order Mott transition in the quasi-two-dimensional organic conductor κ − ( BEDT − TTF ) 2 Cu [ N ( CN ) 2 ] Cl Physical Review B. ,vol. 69, pp. 064511- ,(2004) , 10.1103/PHYSREVB.69.064511
Weihong Zheng, Rajiv R. P. Singh, Ross H. McKenzie, Radu Coldea, Temperature dependence of the magnetic susceptibility for triangular-lattice antiferromagnets with spatially anisotropic exchange constants Physical Review B. ,vol. 71, pp. 134422- ,(2005) , 10.1103/PHYSREVB.71.134422
P. Limelette, P. Wzietek, S. Florens, A. Georges, T. A. Costi, C. Pasquier, D. Jérome, C. Mézière, P. Batail, Mott transition and transport crossovers in the organic compound kappa-(BEDT-TTF)2Cu[N(CN)2]Cl. Physical Review Letters. ,vol. 91, pp. 016401- 016401 ,(2003) , 10.1103/PHYSREVLETT.91.016401
K. Miyagawa, A. Kawamoto, Y. Nakazawa, K. Kanoda, Antiferromagnetic Ordering and Spin Structure in the Organic Conductor, κ -(BEDT-TTF ) 2 Cu[N(CN ) 2 ]Cl Physical Review Letters. ,vol. 75, pp. 1174- 1177 ,(1995) , 10.1103/PHYSREVLETT.75.1174
S. Lefebvre, P. Wzietek, S. Brown, C. Bourbonnais, D. Jérome, C. Mézière, M. Fourmigué, P. Batail, Mott transition, antiferromagnetism, and unconventional superconductivity in layered organic superconductors. Physical Review Letters. ,vol. 85, pp. 5420- 5423 ,(2000) , 10.1103/PHYSREVLETT.85.5420
Ryuichi Masutomi, Yoshitomo Karaki, Hidehiko Ishimoto, Gapless spin liquid behavior in two-dimensional solid 3He. Physical Review Letters. ,vol. 92, pp. 025301- ,(2004) , 10.1103/PHYSREVLETT.92.025301