Importance of uniaxial compression for the appearance of superconductivity in NdO1?xFxBiS2

11th European Conference on Applied Superconductivity

Omachi, A.^1 ; Hiroi, T.^1 ; Kajitani, J.^1 ; Miura, O.^1 ; Mizuguchi, Y.^1

Tokyo Metropolitan University, 1-1, Minami-osawa, Hachioji

192-0397, Japan^1

关键词: Bulk superconductivity;    Layered superconductor;    Superconducting properties;    Uni-axial compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/1/012033/pdf
DOI  :  10.1088/1742-6596/507/1/012033

来源: IOP

【 摘 要 】

We have investigated the crystal structure and superconducting properties of the new layered superconductor NdO1-xFxBiS2. Bulk superconductivity with a Tcabove 4.5 K was observed. It was found that the Tcdepended on both F concentration and crystal structure. Uniaxial compression along the c axis upon F substitution seemed to be linked with the appearance of bulk superconductivity. Furthermore, we considered that a higher Tccan be achieved when the c/a parameter was optimized in the NdO1-xFxBiS2system.