Theory of resonantly enhanced photo-induced superconductivity.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 38485935.
- Also identified by DOI 10.1038/s41467-024-46632-x and PMC identifier 10940728.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Optical driving of materials has emerged as a versatile tool to control their properties, with photo-induced superconductivity being among the most fascinating examples. In this work, we show that light or lattice vibrations coupled to an electronic interband transition naturally give rise to electron-electron attraction that may be enhanced when the underlying boson is driven into a non-thermal state. We find this phenomenon to be resonantly amplified when tuning the boson's frequency close to the energy difference between the two electronic bands. This result offers a simple microscopic mechanism for photo-induced superconductivity and provides a recipe for designing new platforms in which light-induced superconductivity can be realized. We discuss two-dimensional heterostructures as a potential test ground for light-induced superconductivity concretely proposing a setup consisting of a graphene-hBN-SrTiO<sub>3</sub> heterostructure, for which we estimate a superconducting T<sub>c</sub> that may be achieved upon driving the system.