Observation of the Fulde-Ferrell-Larkin-Ovchinnikov state in the quasi-two-dimensional organic superconductor κ-(BEDT-TTF)2Cu(NCS)2 (BEDT-TTF≡bis(ethylene-dithio)tetrathiafulvalene)

Observation of the Fulde-Ferrell-Larkin-Ovchinnikov state in the quasi-two-dimensional organic superconductor κ-(BEDT-TTF)2Cu(NCS)2 (BEDT-TTF≡bis(ethylene-dithio)tetrathiafulvalene)

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Single crystals of the quasi-two-dimensional organic type II superconductor, κ-(BEDT-TTF)2Cu(NCS)2, have been studied in magnetic fields of up to 33 T and at temperatures between 0.5 K and 11 K using a compact differential susceptometer. When the magnetic field lies precisely in the quasi-two-dimens...

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Những tác giả chính: Singleton, J, Symington, J, Nam, M, Ardavan, A, Kurmoo, M, Day, P
Định dạng: Journal article
Ngôn ngữ:English
Được phát hành: IOP 2000
Miêu tả
Tóm tắt:Single crystals of the quasi-two-dimensional organic type II superconductor, κ-(BEDT-TTF)2Cu(NCS)2, have been studied in magnetic fields of up to 33 T and at temperatures between 0.5 K and 11 K using a compact differential susceptometer. When the magnetic field lies precisely in the quasi-two-dimensional planes of the material, there is strong evidence for a phase transition from the superconducting mixed state into a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, manifested as a change in the rigidity of the vortex system. The behaviour of the transition as a function of temperature is in good agreement with theoretical predictions.

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