Lattices of double-quanta vortices and chirality inversion in px+ipy superconductors

Julien Garaud, Egor Babaev, Troels Arnfred Bojesen, and Asle Sudbø
Phys. Rev. B 94, 104509 – Published 13 September 2016

Abstract

We investigate the magnetization processes of a standard Ginzburg-Landau model for chiral p-wave superconducting states in an applied magnetic field. We find that the phase diagram is dominated by triangular lattices of doubly quantized vortices. Only in close vicinity to the upper critical field the lattice starts to dissociate into a structure of single-quanta vortices. The degeneracy between states with opposite chirality is broken in a nonzero field. If the magnetization starts with an energetically unfavorable chirality, the process of chirality inversion induced by the external magnetic field results in the formation of a sequence of metastable states with characteristic magnetic signatures that can be probed by standard experimental techniques.

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  • Received 13 May 2016
  • Revised 18 August 2016

DOI:https://doi.org/10.1103/PhysRevB.94.104509

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Julien Garaud1,*, Egor Babaev1, Troels Arnfred Bojesen2, and Asle Sudbø3

  • 1Department of Theoretical Physics and Center for Quantum Materials, KTH-Royal Institute of Technology, Stockholm SE-10691, Sweden
  • 2RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
  • 3Department of Physics, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway

  • *garaud.phys@gmail.com

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Vol. 94, Iss. 10 — 1 September 2016

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