Upper critical field in a trigonal unconventional superconductor: UPt3

P. L. Krotkov; V. P. Mineev

doi:10.1103/PhysRevB.65.224506

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Upper critical field in a trigonal unconventional superconductor: UPt3

P. L. Krotkov, V. P. Mineev

DOI 10.1103/PhysRevB.65.224506 · Physical Review B

T1

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Abstract

A theory of the upper critical field in a trigonal superconductor with a two-component order-parameter is developed. We demonstrate the existence of sixfold modulations of the upper critical field in the basal plane. The form of the angular dependence of Hc2 in the plane of the main symmetry axis is studied in the whole range of phenomenological rigidity coefficients. A qualitative dependence of these coefficients on the form of the Fermi surface is established. The results obtained are discussed in connection with the measurements of the direction dependence of Hc2 in the heavy-fermion superconductor UPt3, which has been recently found to possess trigonal crystalline structure.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Cu1.8Mo6S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown