Light-induced d-wave superconductivity through Floquet-engineered Fermi surfaces in cuprates
arXiv:1808.04655 · doi:10.1103/PhysRevB.100.075115
Abstract
We introduce a mechanism for light-induced Floquet engineering of the Fermi surface to dynamically tip the balance between competing instabilities in correlated condensed matter systems in the vicinity of a van-Hove singularity. We first calculate how the Fermi surface is deformed by an off-resonant, high-frequency light field and then determine the impact of this deformation on the ordering tendencies using an unbiased functional renormalization group approach. As a testbed, we investigate Floquet engineering in cuprates driven by light. We find that the -wave superconducting ordering tendency in this system can be strongly enhanced over the Mott insulating one. This gives rise to extended regions of induced -wave superconductivity in the effective phase diagram in the presence of a light field.
4 pages, 3 figures plus Supplementary Information
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