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BCS theory of driven superconductivity

Author

Listed:
  • Andreas Komnik

    (Institut für Theoretische Physik, Universität Heidelberg)

  • Michael Thorwart

    (I. Institut für Theoretische Physik, Universität Hamburg
    The Hamburg Center for Ultrafast Imaging)

Abstract

We study the impact of a time-dependent external driving of the lattice phonons in a minimal model of a BCS superconductor. Upon evaluating the driving-induced vertex corrections of the phonon-mediated electron-electron interaction, we show that parametric phonon driving can be used to elevate the critical temperature T c , while a dipolar phonon drive has no effect. We provide simple analytic expressions for the enhancement factor of T c . Furthermore, a mean-field analysis of a nonlinear phonon-phonon interaction also shows that phonon anharmonicities further amplify T c . Our results hold universally for the large class of normal BCS superconductors.

Suggested Citation

  • Andreas Komnik & Michael Thorwart, 2016. "BCS theory of driven superconductivity," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(11), pages 1-5, November.
    • Handle: RePEc:spr:eurphb:v:89:y:2016:i:11:d:10.1140_epjb_e2016-70528-1
    DOI: 10.1140/epjb/e2016-70528-1
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    Cited by:

    1. Christian J. Eckhardt & Sambuddha Chattopadhyay & Dante M. Kennes & Eugene A. Demler & Michael A. Sentef & Marios H. Michael, 2024. "Theory of resonantly enhanced photo-induced superconductivity," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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    Keywords

    Solid State and Materials;

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