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  • Featured in Physics
  • Letter

Superconducting dome in ferroelectric-type materials from soft mode instability

Chandan Setty*

Matteo Baggioli†

Alessio Zaccone‡

  • Department of Physics and Astronomy, Rice Center for Quantum Materials, Rice University, Houston, Texas 77005, USA

  • Wilczek Quantum Center, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China and Shanghai Research Center for Quantum Sciences, Shanghai 201315, China

  • Department of Physics “A. Pontremoli”, University of Milan, via Celoria 16, 20133 Milan, Italy and Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, CB30HE Cambridge, United Kingdom

  • *csetty@rice.edu
  • †b.matteo@sjtu.edu.cn
  • ‡alessio.zaccone@unimi.it
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Phys. Rev. B 105, L020506 – Published 25 January, 2022Erratum Phys. Rev. B 106, 139903 (2022)

DOI: https://doi.org/10.1103/PhysRevB.105.L020506

Abstract

We present a minimal theory of superconductivity enhancement in ferroelectric-type materials. Simple expressions for the optical mode responsible for the soft mode transition are assumed. A key role is played by the anharmonic phonon damping which is modulated by an external control parameter (electron doping or mechanical strain) causing the appearance of the soft mode. It is shown that the enhancement in the superconducting critical temperature Tc upon approaching the ferroelectric transition from either side is due to the Stokes electron-phonon scattering processes promoted by strong phonon damping effects.

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      Erratum

      Erratum: Superconducting dome in ferroelectric-type materials from soft mode instability [Phys. Rev. B 105, 020506 (2022)]

      Chandan Setty, Matteo Baggioli, and Alessio Zaccone
      Phys. Rev. B 106, 139903 (2022)

      synopsis

      Superconductivity Dome Rises from Damped Phonons

      Published 25 January, 2022

      An unexpectedly simple extension to a theory explains the critical temperature anomalies observed in ferroelectric superconductors.

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      Phys. Rev. B 105, L020506– Published 25 January, 2022
      • Received 18 October 2021
      • Revised 16 December 2021
      • Accepted 20 December 2021
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