Millimeter-wave magneto-optical determination of the anisotropic superconducting order parameter in the molecular superconductor K-(BEDT-TTF)2Cu(NCS)2

J. M. Schrama; Eva Joanna Rzepniewski; Arzhang Ardavan; R. Edwards; J. Singleton; M. Kurmoo; P. Day

doi:10.1117/12.361050

9 September 1999 Millimeter-wave magneto-optical determination of the anisotropic superconducting order parameter in the molecular superconductor _κ-(BEDT-TTF)₂Cu(NCS)₂

J. M. Schrama, Eva Joanna Rzepniewski, Arzhang Ardavan, R. Edwards, J. Singleton, M. Kurmoo, P. Day

Author Affiliations +

Proceedings Volume 3828, Terahertz Spectroscopy and Applications II; (1999) https://doi.org/10.1117/12.361050
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

We have used a novel millimeter-wave magneto-optical technique to study the angle-dependence of the high- frequency conductivity of the molecular superconductor (kappa) -(BEDT-TTF)₂Cu(NCS)₂. The data strongly suggests that the superconducting gap has nodes directed along the b and c directions of the crystal, in agreement with recent theoretical predictions. This supports the idea that the superconductivity in (kappa) -(BEDT-TTF)₂Cu(NCS)₂ is d-wave in nature, and is mediated by spin fluctuations.

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J. M. Schrama, Eva Joanna Rzepniewski, Arzhang Ardavan, R. Edwards, J. Singleton, M. Kurmoo, and P. Day "Millimeter-wave magneto-optical determination of the anisotropic superconducting order parameter in the molecular superconductor _κ-(BEDT-TTF)₂Cu(NCS)₂", Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); https://doi.org/10.1117/12.361050

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