First-order chiral to non-chiral transition in the angular dependence of the upper critical induction of the Scharnberg-Klemm p-wave pair state

J Zhang; C Lörscher; Q Gu; R A Klemm

doi:10.1088/0953-8984/26/25/252202

First-order chiral to non-chiral transition in the angular dependence of the upper critical induction of the Scharnberg-Klemm p-wave pair state

J Phys Condens Matter. 2014 Jun 25;26(25):252202. doi: 10.1088/0953-8984/26/25/252202. Epub 2014 May 29.

Authors

J Zhang¹, C Lörscher, Q Gu, R A Klemm

Affiliation

¹ Department of Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China.

PMID: 24871338
DOI: 10.1088/0953-8984/26/25/252202

Abstract

We calculate the temperature T and angular (θ, ϕ) dependencies of the upper critical induction Bc2(θ, ϕ, T) for parallel-spin superconductors with an axially symmetric p-wave pairing interaction pinned to the lattice and a dominant ellipsoidal Fermi surface (FS). For all FS anisotropies, the chiral Scharnberg-Klemm (SK) state Bc2(θ, ϕ, T) exceeds that of the chiral Anderson-Brinkman-Morel (ABM) state and exhibits a kink at θ = θ*(T, ϕ), indicative of a first-order transition from its chiral, nodal-direction behavior to its non-chiral, antinodal-direction behavior. Applicabilities to Sr2RuO4, UCoGe and the candidate topological superconductor CuxBi2Se3 are discussed.

Publication types

Research Support, Non-U.S. Gov't