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Conventional mechanisms for exotic superconductivity

D. F. Agterberg, Victor Barzykin, Lev P. Gor’kov

DOI 10.1103/PhysRevB.60.14868 · Physical Review B

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Abstract

We consider the pairing state due to the usual BCS mechanism in substances of cubic and hexagonal symmetry where the Fermi surface forms pockets around several points of high symmetry. We find that the symmetry imposed on the multiple pocket positions could give rise to a multidimensional nontrivial superconducting order parameter. The time-reversal symmetry in the pairing state is broken. We suggest several candidate substances where such ordering may appear, and discuss means by which such a phase may be identified.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
LaB6

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

0.1Pressure not reportedunknown
CeCo2

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

1.6Pressure not reportedunknown

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