Fermi-surface topology and the effects of intrinsic disorder in a class of charge-transfer salts containing magnetic ions, \beta''-(BEDT-TTF)_4[(H_3O)M(C_2O_4)_3]Y
(2003)
Angle-dependence of the magnetotransport and Anderson localization in a pressure-induced organic superconductor
SYNTHETIC MET 137:1-3 (2003) 1287-1288
Abstract:
The conducting properties of the pressure-induced, layered organic superconductor (BEDT-TTF)(3)Cl-2 . 2H(2)O have been studied at 13.5 and 14.0 kbar using low temperatures, high magnetic fields and two-axis rotation. The observed negative magnetoresistance at 13.5 kbar can be explained by considering Anderson localization within the layers. Further application of pressure destroys the effects of localization.Magnetotransport measurements on beta ''-(BEDT-TTF)(4)[(H3O)Ga3+(C2O4)(3)](center dot) C6N5NO2
SYNTHETIC MET 137:1-3 (2003) 1313-1314
Abstract:
Transport measurements have been carried out on single crystals of the charge transfer salt beta"-(BEDT-TTF)(4)[(H3O) Ga3+ (C2O4)(3)]. C6H5NO2, using magnetic fields of up to 33 T and temperatures down to 0.55 K. The material is found to be superconducting with T. 7.5 K and an in-plane critical field B-c2 greater than or equal to 33 T, and to exhibit Shubnikov-de Haas (SdH) oscillations. The temperature and angle dependence of the Shubnikov-de Haas oscillations and the upper critical field are reported, allowing information about the anisotropy of the upper critical field, effective mass m*, and the Fermi-surface (FS) of the material to be deduced.Magnetotransport measurements on β"-(BEDT-TTF)4 [(H3 O)Ga3+(C2 O4 )3 ]. C6 H5 NO2
Synthetic Metals 137:1-3 (2003) 1313-1314
Abstract:
Transport measurements have been carried out on single crystals of the charge transfer salt β″-(BEDT-TTF)4[(H3O)Ga3+(C2 O4)3]. C6H5NO2, using magnetic fields of up to 33 T and temperatures down to 0.55 K. The material is found to be superconducting with Tc ≈ 7.5 K and an in-plane critical field Bc2 ≥ 33 T, and to exhibit Shubnikov-de Haas (SdH) oscillations. The temperature and angle dependence of the Shubnikov-de Haas oscillations and the upper critical field are reported, allowing information about the anisotropy of the upper critical field, effective mass m*, and the Fermi-surface (FS) of the material to be deduced.Millimetre-wave response of the novel organic superconductors beta ''-ET4[(H3O)M(C2O4)(3)]center dot S (M=Fe3+, S=C6H5CN and C6H5NO2)
SYNTHETIC MET 137:1-3 (2003) 1225-1226