Title of article :
Superconductivity in α-(BEDT-TTF)2MHg(SCN)4 (M=K, Rb, Tl, NH4)
Author/Authors :
Ito، نويسنده , , H. and Kartsovnik، نويسنده , , M.V. and Ishimoto، نويسنده , , H. and Kono، نويسنده , , K. and Mori، نويسنده , , H. and Kushch، نويسنده , , N.D. and Saito، نويسنده , , G. and Ishiguro، نويسنده , , T. and Tanaka، نويسنده , , S.، نويسنده ,
Abstract :
The layered organic metals α-(BEDT-TTF)2MHg(SCN)4 (M=K, Rb, Tl) show resistance decrease with the onset at 0.3 K, 0.5 K and 0.1 K, respectively. These decreases are suppressed by a magnetic field less than 0.2 T and considered as an occurence of superconductivity, although zero resistance is not achieved. We discuss this incomplete superconducting transition in terms of the vicinity to a superconductor-insulator transition caused by the elevated sheet resistance due to the antiferromagnetic ordering at 8 ≈ 10 K.
