Investigation of Vortex Behavior in the Organic Superconductorκ(BEDTTTF)2Cu(SCN)2Using Muon Spin Rotation

Abstract
Muon spin rotation ( μSR) measurements have been performed on the organic superconductor κ(BEDTTTF)2Cu(SCN)2 in order to investigate its exotic vortex behavior. Previously unobserved features of the μSR line shapes have been measured at low fields and temperatures. In the mixed state the existence of a lattice composed of linear vortices is demonstrated at low fields. The breakup of this well-ordered lattice has furthermore been observed as a function of both field and temperature.