Light-induced evaporative cooling of holes in the Hubbard model

Werner P, Eckstein M, Müller M, Refael G (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Nature Communications Nature Publishing Group: Nature Communications

Book Volume: 10

Article Number: 5556

Journal Issue: 1

DOI: 10.1038/s41467-019-13557-9

Abstract

An elusive goal in the field of driven quantum matter is the induction of long-range order. Here, we propose a mechanism based on light-induced evaporative cooling of holes in a correlated fermionic system. Since the entropy of a filled narrow band grows rapidly with hole doping, the isentropic transfer of holes from a doped Mott insulator to such a band results in a drop of temperature. Strongly correlated Fermi liquids and symmetry-broken states could thus be produced by dipolar excitations. Using nonequilibrium dynamical mean field theory, we show that suitably designed chirped pulses may realize this cooling effect. In particular, we demonstrate the emergence of antiferromagnetic order in a system which is initially in a weakly correlated state above the maximum Néel temperature. Our work suggests a general strategy for inducing strong correlation phenomena in periodically modulated atomic gases in optical lattices or light-driven materials.

Authors with CRIS profile

Martin Eckstein Lehrstuhl für Theoretische Festkörperphysik

Involved external institutions

University of Fribourg / Universitè de Fribourg CH Switzerland (CH) Paul Scherrer Institute (PSI) CH Switzerland (CH) California Institute of Technology (Caltech) US United States (USA) (US)

How to cite

APA:

Werner, P., Eckstein, M., Müller, M., & Refael, G. (2019). Light-induced evaporative cooling of holes in the Hubbard model. Nature Communications, 10(1). https://doi.org/10.1038/s41467-019-13557-9

MLA:

Werner, Philipp, et al. "Light-induced evaporative cooling of holes in the Hubbard model." Nature Communications 10.1 (2019).

BibTeX: Download