Exact solution of the Ginzburg-Landau equations for the upper critical field of multicomponent superconductors

S. K. Sundaram; Robert Joynt

doi:10.1103/PhysRevLett.66.512

← Back to search

Exact solution of the Ginzburg-Landau equations for the upper critical field of multicomponent superconductors

S. K. Sundaram, Robert Joynt

DOI 10.1103/PhysRevLett.66.512 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We present an exact solution of the problem of the upper critical field of an E1 or E2 superconductor. This resolves a long-standing difficulty in the theory of these materials, since only variational methods have been available up to this time. The solution is valid for all directions of the external field relative to the crystal axes. This makes the anisotropy of the upper critical field into an unambiguous test of unconventional superconductivity. Good agreement with experimental measurements on UPt3 is found.

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