SurfaceScience21 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 59: Mini-Symposium: Coherent band structure engineering with light I
O 59.2: Vortrag
Mittwoch, 3. März 2021, 11:00–11:15, R2
Electronic Liquid Gyro-Crystals — •Iliya Esin1,2, Gaurav Gupta2, Erez Berg3, Mark Rudner4, and Netanel Lindner2 — 1California Institute of Technology, Pasadena, USA — 2Technion, Haifa, Israel — 3Weizmann Institute of Science, Rehovot, Israel — 4University of Copenhagen, Copenhagen, Denmark
We show that coherent time-periodic driving 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 extreme 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 novel non-equilibrium quantum phases of matter with dynamical broken symmetry.