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Piezo-superconductivity: new effects in non-centrosymmetric superconductors

Kapustin, Anton and Radzihovsky, Leo (2022) Piezo-superconductivity: new effects in non-centrosymmetric superconductors. . (Unpublished)

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We study novel effects in non-centrosymmetric superconductors arising from their unique coupling of Cooper-pair condensate and elasticity. We show that although the much discussed Lifshitz coupling is not observable in a uniform bulk state, it strikingly endows dislocations with a fractional magnetic flux. We also predict a generation of voltage-free strain by a DC current in a P and T-breaking Josephson junction. Viewing superconductors through the lens of higher-form symmetries we identify the Lifshitz coupling as a chemical potential for the approximately conserved winding number, drawing an analogy with pyroelectric insulators.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription Paper
Kapustin, Anton0000-0003-3903-5158
Radzihovsky, Leo0000-0002-2281-0835
Additional Information:Attribution 4.0 International (CC BY 4.0). We acknowledge financial support through the Simons Investigator Awards by the James Simons Foundation. A. K. was also supported in part by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0011632. L.R. thanks D. Agterberg and L. Fu for discussions.
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Simons FoundationUNSPECIFIED
Department of Energy (DOE)DE-SC0011632
Record Number:CaltechAUTHORS:20220224-200904432
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113595
Deposited By: George Porter
Deposited On:28 Feb 2022 17:42
Last Modified:28 Feb 2022 17:42

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