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Light-induced d-wave superconductivity through Floquet-engineered Fermi surfaces in cuprates

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Sentef,  M. A.
Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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PhysRevB.100.075115.pdf
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Citation

Kennes, D. M., Claassen, M., Sentef, M. A., & Karrasch, C. (2019). Light-induced d-wave superconductivity through Floquet-engineered Fermi surfaces in cuprates. Physical Review B, 100(7): 075115. doi:10.1103/PhysRevB.100.075115.


Cite as: https://hdl.handle.net/21.11116/0000-0002-15EB-E
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 d-wave superconducting ordering tendency in this system can be strongly enhanced over the Mott insulating one. This gives rise to extended regions of induced d-wave superconductivity in the effective phase diagram in the presence of a light field.