Mixed phases in U(N) superconductivity

M. A. Moore; T. J. Newman; A. J. Bray; S-K. Chin

doi:10.1103/PhysRevB.58.936

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Mixed phases in U(N) superconductivity

M. A. Moore, T. J. Newman, A. J. Bray, S-K. Chin

DOI 10.1103/PhysRevB.58.936 · Physical Review B

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Abstract

We consider a general class of type-II superconductors which are described by N complex order parameters (OP's), with an overall U(N) symmetry for the energy functional. In the lowest-energy state, each OP adopts its own particular lattice structure, making the spatial variation of the overall condensate very complex. We present detailed results for the case N=2. We also treat the limit N→∞, which allows us to resolve a recent controversy, by showing that all previous studies are fundamentally flawed.

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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