Twisted chiral superconductivity in photodoped frustrated Mott insulators
Abstract
Recent advances in ultrafast pump-probe spectroscopy provide access to hidden phases of correlated matter, including light-induced superconducting states, but the theoretical understanding of these nonequilibrium phases remains limited. Here we report how a new type of chiral superconducting phase can be stabilized in photodoped frustrated Mott insulators. The metastable phase features a spatially varying order parameter with a phase twist which breaks both time-reversal and inversion symmetry. Under an external electric pulse, the chiral superconducting state can exhibit a second-order supercurrent perpendicular to the field in addition to a first-order parallel response, similar to a nonlinear anomalous Hall effect. This phase can be tuned by artificial gauge fields when the system is dressed by high-frequency periodic driving. The mechanism revealed in this study applies to Mott insulators on various frustrated lattices and the hidden superconducting phase can be realized in both cold-atom quantum simulators and correlated solids.
Keywords
Cite
@article{arxiv.2202.10176,
title = {Twisted chiral superconductivity in photodoped frustrated Mott insulators},
author = {Jiajun Li and Markus Müller and Aaram J. Kim and Andreas Läuchli and Philipp Werner},
journal= {arXiv preprint arXiv:2202.10176},
year = {2023}
}