Universität zu Köln

Lenarcic, Zala ORCID: 0000-0001-8374-8011, Altman, Ehud and Rosch, Achim ORCID: 0000-0002-6586-5721 (2018). Activating Many-Body Localization in Solids by Driving with Light. Phys. Rev. Lett., 121 (26). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

Because of the presence of phonons, many-body localization (MBL) does not occur in disordered solids, even if disorder is strong. Local conservation laws characterizing an underlying MBL phase decay due to the coupling to phonons. We show that this decay can be compensated when the system is driven out of equilibrium. The resulting variations of the local temperature provide characteristic fingerprints of an underlying MBL phase. We consider a one-dimensional disordered spin chain, which is weakly coupled to a phonon bath and weakly irradiated by white light. The irradiation has weak effects in the ergodic phase. However, if the system is in the MBL phase, irradiation induces strong temperature variations despite the coupling to phonons. Temperature variations can be used similar to an order parameter to detect MBL phases, the phase transition, and a MBL correlation length.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lenarcic, Zala UNSPECIFIED orcid.org/0000-0001-8374-8011 UNSPECIFIED Altman, Ehud UNSPECIFIED UNSPECIFIED UNSPECIFIED Rosch, Achim UNSPECIFIED orcid.org/0000-0002-6586-5721 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-161680
DOI:	10.1103/PhysRevLett.121.267603
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	121
Number:	26
Date:	2018
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language METAL-INSULATOR-TRANSITION; QUANTUM Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/16168