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A bulk 2D Pauli Limited Superconductor

T. Coffey·C. Martin·C. C. Agosta·Tatsue Kinoshota·M. Tokumoto
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Abstract

We present a nearly perfect Pauli-limited critical field phase diagram for the anisotropic organic superconductor \$α$-(ET)$_2$NH$_4$(SCN)$_4$ when the applied magnetic field is oriented parallel to the conducting layers. The critical fields (${H_{c_2}$) were found by use of penetration depth measurements. Because ${H_{c_2}$ is Pauli-limited, the size of the superconducting energy gap can be calculated. The role of spin-orbit scattering and many-body effects play a role in explaining our measurements.

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T. Coffey, C. Martin, C. C. Agosta, Tatsue Kinoshota, M. Tokumoto. 2010-06-28. A bulk 2D Pauli Limited Superconductor. https://doi.org/10.1103/physrevb.82.212502

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