Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session G34: Ultrafast Dynamics and Control of Quantum Materials I
11:30 AM–2:06 PM,
Tuesday, March 15, 2022
Room: McCormick Place W-193A
Sponsoring
Unit:
DLS
Chair: Robert Kaindl, Arizona State University
Abstract: G34.00013 : Nonequilibrium phase transition in a driven-dissipative quantum antiferromagnet*
1:54 PM–2:06 PM
Presenter:
Mona H Kalthoff
(Max Planck Institute for the Structure & Dynamics of Matter)
Authors:
Mona H Kalthoff
(Max Planck Institute for the Structure & Dynamics of Matter)
Dante M Kennes
(RWTH Aachen University)
Andrew J Millis
(Columbia University)
Michael A Sentef
(Max Planck Institute for the Structure & Dynamics of Matter)
A deeper theoretical understanding of driven-dissipative interacting systems and their nonequilibrium phase transitions is essential both to advance our fundamental physics understanding and to harness technological opportunities arising from optically controlled quantum many-body states. Here we provide a numerical study of dynamical phases and the transitions between them in the nonequilibrium steady state of the prototypical two-dimensional Heisenberg antiferromagnet with drive and dissipation. We demonstrate a nonthermal transition that is characterized by a qualitative change in the magnon distribution, from subthermal at low drive to a generalized Bose-Einstein form including a nonvanishing condensate fraction at high drive. A finite-size analysis reveals static and dynamical critical scaling at the transition, with a discontinuous slope of the magnon number versus driving field strength and critical slowing down at the transition point. Implications for experiments on quantum materials and polariton condensates are discussed.
*This work was supported by the Max Planck-New York City Center for Nonequilibrium Quantum Phenomena. MAS acknowledges financial support through the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via the Emmy Noether program (SE 2558/2). DMK acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via RTG 1995 and Germany's Excellence Strategy - Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1 - 390534769. A.J.M. is supported in part by Programmable Quantum Materials, an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under award DE-SC0019443. The Flatiron Institute is a division of the Simons Foundation.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700