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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)

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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