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  Nonequilibrium phase transition in a driven-dissipative quantum antiferromagnet

Kalthoff, M., Kennes, D. M., Millis, A. J., & Sentef, M. A. (2022). Nonequilibrium phase transition in a driven-dissipative quantum antiferromagnet. Physical Review Research, 4(2): 023115. doi:10.1103/PhysRevResearch.4.023115.

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PhysRevResearch.4.023115.pdf (Publisher version), 2MB
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PhysRevResearch.4.023115.pdf
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Open Access. - Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
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2022
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© the Author(s). Published by the American Physical Society

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https://arxiv.org/abs/2107.03841 (Preprint)
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 Creators:
Kalthoff, M.1, 2, Author              
Kennes, D. M.2, 3, 4, 5, Author              
Millis, A. J.6, 7, Author
Sentef, M. A.1, 2, Author              
Affiliations:
1Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
2Center for Free-Electron Laser Science (CFEL), ou_persistent22              
3Institut für Theorie der Statistischen Physik, RWTH Aachen University, ou_persistent22              
4JARA-Fundamentals of Future Information Technology, ou_persistent22              
5Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
6Department of Physics, Columbia University, ou_persistent22              
7Center for Computational Quantum Physics, Flatiron Institute, ou_persistent22              

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 Abstract: 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. This paper provides 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.

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Language(s): eng - English
 Dates: 2021-12-152022-04-192022-05-12
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: arXiv: 2107.03841
DOI: 10.1103/PhysRevResearch.4.023115
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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 4 (2) Sequence Number: 023115 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564