dc.contributor.authorWilson, Justin H.
dc.contributor.authorSong, Justin Chien Wen
dc.contributor.authorRefael, Gil
dc.identifier.citationWilson, J. H., Song, J. C. W., & Refael, G. (2016). Remnant Geometric Hall Response in a Quantum Quench. Physical Review Letters, 117(23), 235302-.en_US
dc.description.abstractOut-of-equilibrium systems can host phenomena that transcend the usual restrictions of equilibrium systems. Here, we unveil how out-of-equilibrium states, prepared via a quantum quench in a two-band system, can exhibit a nonzero Hall-type current—a remnant Hall response—even when the instantaneous Hamiltonian is time reversal symmetric (in contrast to equilibrium Hall currents). Interestingly, the remnant Hall response arises from the coherent dynamics of the wave function that retain a remnant of its quantum geometry postquench, and can be traced to processes beyond linear response. Quenches in two-band Dirac systems are natural venues for realizing remnant Hall currents, which exist when either mirror or time-reversal symmetry are broken (before or after the quench). Its long time persistence, sensitivity to symmetry breaking, and decoherence-type relaxation processes allow it to be used as a sensitive diagnostic of the complex out-of-equilibrium dynamics readily controlled and probed in cold-atomic optical lattice experiments.en_US
dc.format.extent6 p.en_US
dc.relation.ispartofseriesPhysical Review Lettersen_US
dc.rights© 2016 American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevLett.117.235302]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectHall effecten_US
dc.subjectOut-of-equilibrium dynamicsen_US
dc.titleRemnant Geometric Hall Response in a Quantum Quenchen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US

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