Correlation effects in ET compounds
作者： R. Louati , S. Charfi-Kaddour , A. Ben Ali , R. Bennaceur , M. Héritier
DOI: 10.1016/S0379-6779(98)00257-4
关键词:
摘要: Abstract The ET salt family is described by a two parameter 2D Fermi surface model, in which bandwidth and departure from perfect nesting can be varied. We have studied the effect of spin fluctuations on normal state properties RPA approach. calculated NMR relaxation rate exhibits peak 1/T1T, strongly decreases when increase. These results are agreement with experiments done (BEDT-TTF)2 X (X= Cu[N(CN)2]Br, Cu(NCS)2), at least qualitatively. investigate superconductivity pairing due to model quasi-2D electrons close SDW instability, two-parameter coupling constants various channels calculated. They depend bandwidth.
elsevier.com
rnu.tn 参考文章(8)
H. Mayaffre, P. Wzietek, D. Jérome, C. Lenoir, P. Batail, Superconducting state of kappa -(ET)2CUBr studied by 13C NMR: Evidence for vortex-core-induced nuclear relaxation and unconventional pairing. Physical Review Letters. ,vol. 75, pp. 4122- 4125 ,(1995) , 10.1103/PHYSREVLETT.75.4122
J Caulfield, W Lubczynski, F L Pratt, J Singleton, D Y K Ko, W Hayes, M Kurmoo, P Day, Magnetotransport studies of the organic superconductor kappa -(BEDT-TTF)2Cu(NCS)2 under pressure: the relationship between carrier effective mass and critical temperature Journal of Physics: Condensed Matter. ,vol. 6, pp. 2911- 2924 ,(1994) , 10.1088/0953-8984/6/15/013
A. Kawamoto, K. Miyagawa, Y. Nakazawa, K. Kanoda, 13C NMR Study of Layered Organic Superconductors Based on BEDT-TTF Molecules. Physical Review Letters. ,vol. 74, pp. 3455- 3458 ,(1995) , 10.1103/PHYSREVLETT.74.3455
H Mayaffre, P Wzietek, C Lenoir, D Jérome, P Batail, 13C NMR Study of a Quasi-Two-Dimensional Organic Superconductor κ-(ET)2Cu[N(CN)2]Br EPL. ,vol. 28, pp. 205- 210 ,(1994) , 10.1209/0295-5075/28/3/009
Yu. V. Sushko, V. A. Bondarenko, R. A. Petrosov, N. D. Kushch, E. B. Yagubskii, Hydrostatic pressure effect on Tc and resistance anomaly in normal state of κ-(BEDT-TTF)2CuN(CN)2Br Journal De Physique I. ,vol. 1, pp. 1375- 1379 ,(1991) , 10.1051/JP1:1991209
M. T. Béal-Monod, C. Bourbonnais, V. J. Emery, Possible superconductivity in nearly antiferromagnetic itinerant fermion systems Physical Review B. ,vol. 34, pp. 7716- 7720 ,(1986) , 10.1103/PHYSREVB.34.7716
D. J. Scalapino, E. Loh, J. E. Hirsch, d -wave pairing near a spin-density-wave instability Physical Review B. ,vol. 34, pp. 8190- 8192 ,(1986) , 10.1103/PHYSREVB.34.8190
D. J. Scalapino, E. Loh, J. E. Hirsch, Fermi-surface instabilities and superconducting d -wave pairing Physical Review B. ,vol. 35, pp. 6694- 6698 ,(1987) , 10.1103/PHYSREVB.35.6694