Bulk two-dimensional Pauli-limited superconductor

T. Coffey; C. Martin; C. C. Agosta; T. Kinoshota; M. Tokumoto

doi:10.1103/PhysRevB.82.212502

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Bulk two-dimensional Pauli-limited superconductor

T. Coffey, C. Martin, C. C. Agosta, T. Kinoshota, M. Tokumoto

DOI 10.1103/PhysRevB.82.212502 · Physical Review B

T1

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Abstract

We present a nearly perfect Pauli-limited critical-field phase diagram for the anisotropic organic superconductor α−(ET)2NH4(SCN)4 when the applied magnetic field is oriented parallel to the conducting layers. The critical fields (Hc2) were found by use of penetration depth measurements. Because Hc2 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
α-(ET)2NH4(SCN)4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.96	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown