Garaud, J., Carlström, J., Babaev, E. et al. (1 more author) (2013) Chiral CP² skyrmions in three-band superconductors. Physical Review B, 87 (1). 014507. ISSN 2469-9950
Abstract
It is shown that under certain conditions, three-component superconductors (and, in particular, three-band systems) allow stable topological defects different from vortices. We demonstrate the existence of these excitations, characterized by a topological invariant, in models for three-component superconductors with broken time-reversal symmetry. We term these topological defects “chiral skyrmions,” where “chiral” refers to the fact that due to broken time-reversal symmetry, these defects come in inequivalent left- and right-handed versions. In certain cases, these objects are energetically cheaper than vortices and should be induced by an applied magnetic field. In other situations, these skyrmions are metastable states, which can be produced by a quench. Observation of these defects can signal broken time-reversal symmetry in three-band superconductors or in Josephson-coupled bilayers of and -wave superconductors.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Feb 2025 09:07 |
Last Modified: | 27 Feb 2025 09:07 |
Published Version: | https://journals.aps.org/prb/abstract/10.1103/Phys... |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/physrevb.87.014507 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:223747 |