Electronic Floquet gyro-liquid crystal

Iliya Esin (), Gaurav Kumar Gupta, Erez Berg, Mark S. Rudner and Netanel H. Lindner
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Iliya Esin: Technion
Gaurav Kumar Gupta: Technion
Erez Berg: Weizmann Institute of Science
Mark S. Rudner: Niels Bohr Institute, University of Copenhagen
Netanel H. Lindner: Technion

Nature Communications, 2021, vol. 12, issue 1, 1-12

Abstract: Abstract Floquet engineering uses coherent time-periodic drives to realize designer band structures on-demand, thus yielding a versatile approach for inducing a wide range of exotic quantum many-body phenomena. Here we show how this approach can be used to induce non-equilibrium correlated states with spontaneously broken symmetry in lightly doped semiconductors. In the presence of a resonant driving field, the system spontaneously develops quantum liquid crystalline order featuring strong anisotropy whose directionality rotates as a function of time. The phase transition occurs in the steady state of the system achieved due to the interplay between the coherent external drive, electron-electron interactions, and dissipative processes arising from the coupling to phonons and the electromagnetic environment. We obtain the phase diagram of the system using numerical calculations that match predictions obtained from a phenomenological treatment and discuss the conditions on the system and the external drive under which spontaneous symmetry breaking occurs. Our results demonstrate that coherent driving can be used to induce non-equilibrium quantum phases of matter with dynamical broken symmetry.

Date: 2021
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DOI: 10.1038/s41467-021-25511-9

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