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Journal Article

Control of Yu-Shiba-Rusinov States through a Bosonic Mode

MPS-Authors

Müller,  Helene
Viola-Kusminskiy Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Department of Physics, University of Erlangen-Nürnberg;

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Viola-Kusminskiy,  Silvia
Institute for Theoretical Solid State Physics, RWTH Aachen University;
Viola-Kusminskiy Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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PhysRevLett.130.106905.pdf
(Publisher version), 721KB

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Citation

Müller, H., Eckstein, M., & Viola-Kusminskiy, S. (2023). Control of Yu-Shiba-Rusinov States through a Bosonic Mode. Physical Review Letters, (130): 106905. doi:10.1103/PhysRevLett.130.106905.


Cite as: https://hdl.handle.net/21.11116/0000-000A-CDBC-C
Abstract
We investigate the impact of a bosonic degree of freedom on Yu-Shiba-Rusinov states emerging from a magnetic impurity in a conventional superconductor. Starting from the Anderson impurity model, we predict that an additional p-wave conduction band channel opens up if a bosonic mode is coupled to the tunneling between impurity and host, which implies an additional pair of odd-parity Yu-Shiba-Rusinov states. The bosonic mode can be a vibrational mode or the electromagnetic field in a cavity. The exchange couplings in the two channels depend sensitively on the state of the bosonic mode (ground state, few quanta, or classically driven Floquet state), which opens possibilities for phononics or photonics control of such systems, with a rich variety of ground and excited states.