Nonequilibrium phononic first-order phase transition in a driven fermion chain

Abstract

We study the direct laser drive of infrared-active phonons that are quadratically coupled to a spinless fermion chain. Feedback is incorporated by phonon dressing of the electronic dispersion, which enables effective non-linearities in the phonon dynamics. We uncover a first-order phase transition in the phononic steady state in which hysteretic effects allow either large or small phonon occupation depending on the drive protocol. We discuss the implications of these findings for probing phase transitions in real driven materials.

arXiv comment7+7 pages, 4+6 figures

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Cited by in corpus (7)

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• Laser-enhanced magnetism in SmFeO${}_3$
• Terahertz high-harmonic generation in gapped antiferromagnetic chains
• Dynamical phase transition in a strongly hybridized phonon-triplon chain
• Cavity-assisted magnetization switching in a quantum spin-phonon chain
• Ultrafast dynamics of a fermion chain in a terahertz field-driven optical cavity