An Experimental and Semi-Empirical Method to Determine the Pauli-Limiting Field in Quasi 2D Superconductors as applied to $\kappa$-(BEDT-TTF)${}_2$Cu(NCS)${}_2$: Strong Evidence of a FFLO State

C. C. Agosta, Jing Jin, W. A. Coniglio +9

We present upper critical field data for $\kappa$-(BEDT-TTF)${}_2$Cu(NCS)${}_2$ with the magnetic field close to parallel and parallel to the conducting layers. We show that we can eliminat…