Charge-density-wave melting in the one-dimensional Holstein model

ORAL

Abstract

We study the real-time dynamics in the half-filled Holstein model starting from different initial states that are charge-density-wave (CDW) ordered. The regime where the relaxation dynamics is dominated by electron-phonon coupling is considered (complementary to the case studied in [1] where strong electron interactions were present) and we focus on the far-from-equilibrium regime. Here, a clear separation of time scales between electron relaxation and phonon equilibration is identified. In the transient dynamics we observe effects like a temporal self trapping of the electrons. The study of such regimes is enabled by extending the time-evolving block decimation algorithm with local basis optimization, previously applied to single-polaron dynamics [2], to a half-filled system.

[1] Hashimoto and Ishihara, PRB 96, 035154 (2017)
[2] Brockt et al., PRB 92, 241106(R) (2015)

*DFG (Deutsche Forschungsgemeinschaft) Research Unit FOR 1807 and SFB 1073, Polish National Agency of Academic Exchange (NAWA), US Department of Energy (DOE)

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Presenters

  • Jan Stolpp

    • Institut for Theoretical Physics, Universität Göttingen

Authors

  • Jan Stolpp

    • Institut for Theoretical Physics, Universität Göttingen

  • Jacek Herbrych

    • Wroclaw University of Science and Technology

  • Florian Dorfner

    • Arnold Sommerfeld Center for Theoretical Physics, Universität München

  • Elbio Dagotto

    • Department of Physics and Astronomy, University of Tennessee and ORNL
    • Physics Department, University of Tennessee
    • University of Tennessee
    • Department of Physics and Astronomy, University of Tennessee at Knoxville
    • University of Tennessee, Knoxville, and Oak Ridge National Laboratory
    • University of Tennessee, Knoxville
    • Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee

  • Fabian Heidrich-Meisner

    • Institut for Theoretical Physics, Universität Göttingen
    • Institute for Theoretical Physics, University of Göttingen, Germany