Antichiral and nematicity-wave superconductivity

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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5

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Physical Review B, Volume 99, issue 22, pp. 1-5

Abstract

Larkin-Ovchinnikov superconducting state has spontaneous modulation of Cooper pair density, while Fulde-Ferrell state has a spontaneous modulation in the phase of the order parameter. We report that a quasi-two-dimensional Dirac metal, under certain conditions has principally different inhomogeneous superconducting states that by contrast have spontaneous modulation in a submanifold of a multiple-symmetries-breaking order parameter. The first state we find can be viewed as a nematic superconductor where the nematicity vector spontaneously breaks rotational and translational symmetries due to spatial modulation. The other demonstrated state is a chiral superconductor with spontaneously broken time-reversal and translational symmetries. It is characterized by an order parameter, which forms a lattice pattern of alternating chiralities.

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Barkman, M, Zyuzin, A A & Babaev, E 2019, 'Antichiral and nematicity-wave superconductivity', Physical Review B, vol. 99, no. 22, 220508, pp. 1-5. https://doi.org/10.1103/PhysRevB.99.220508