Electron-Phonon Coupling in Doped p-Terphenyl

ORAL

Abstract

Potassium-doped para-terphenyl has been reported to be a high critical temperature superconductor. {1,2,3} As a necessary step towards understanding this novel superconductivity, we study electronic structure and electron-phonon coupling in electron doped p-terphenyl using density functional (pertubation) theory calculations for both isolated molecules and extended crystals. Migdal-Elaishberg and dynamical mean field methods are then used to analyse quasiparticle properties and superconducting instabilities. The relevance of polaron physics to this superconductor will also be discussed.
{1} Ren-Shu Wang, Yun Gao, Zhong-Bing Huang and Xiao-Jia Chen. Arxiv: 1703.06641
{2} Ren-Shu Wang, Yun Gao, Zhong-Bing Huang and Xiao-Jia Chen. Arxiv: 1703.05804
{3} Haoxiang Li, Xiaoqing Zhou, Stephen Parham, Thomas Nummy, Justin Griffith, Kyle Gordon, Eric L. Chronister and Daniel. S. Dessau. Arxiv: 1704.04230

*A.J.M. acknowledges support from NSF under contract DMR-1308236 and from the Flatiron Institute. J.C. is supported by the NSF MRSEC program through Columbia under Grant No.DMR-1420634.

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Presenters

  • Jia Chen

    • Department of Applied Physics and Applied Math, Columbia University

Authors

  • Jia Chen

    • Department of Applied Physics and Applied Math, Columbia University

  • Andrew Millis

    • Columbia Univ
    • Columbia University
    • Department of Physics, Columbia University and Center for Computational Quantum Physics, The Flatiron Institute
    • Department of Physics, Columbia University; Center for Computational Quantum Physics, The Flatiron Institute
    • Center for Computational Quantum Physics, The Flatiron Institute
    • Center for Computational Quantum Physics, Flatiron Institute
    • Department of Physics, Columbia University
    • Physics, Columbia Univ and Flatiron Institute Center for Computational Quantum Physics

  • David Reichman

    • Deparement of Chemistry, Columbia University
    • Columbia University