Transport in Stark many-body localized systems

Guy Zisling, Dante M. Kennes, Yevgeny Bar Lev

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Using numerically exact methods we study transport in an interacting spin chain which for sufficiently strong spatially constant electric field is expected to experience Stark many-body localization. We show that starting from a generic initial state, a spin excitation remains localized only up to a finite delocalization time, which depends exponentially on the size of the system and the strength of the electric field. This suggests that bona fide Stark many-body localization occurs only in the thermodynamic limit. We also demonstrate that the transient localization in a finite system and for electric fields stronger than the interaction strength can be well approximated by a Magnus expansion up to times which grow with the electric field strength.

Original languageEnglish
Article numberL140201
JournalPhysical Review B
Volume105
Issue number14
DOIs
StatePublished - 1 Apr 2022

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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