TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.13.2.016
TI  - Renormalization approach to the superconducting Kondo model
PY  - 2022/08/12
UR  - https://scipost.org/SciPostPhys.13.2.016
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 13
IS  - 2
SP  - 016
A1  - Sykora, Steffen
AU  - Meng, Tobias
AB  - An approach to bound states based on unitary transformations of Hamiltonians is presented. The method is applied to study the interaction between electrons in a BCS $s$-wave superconductor and a quantum spin. It is shown that known results from the t-matrix method and numerical studies are reproduced by this new method. As a main advantage, the method can straightforwardly be extended to study the topological properties of combined bound states in chains of many magnetic impurities. It also provides a uniform picture of the interplay between the Yu-Shiba-Rusinov (YSR) bound states and the Kondo singlet state.
ER  -

@Article{10.21468/SciPostPhys.13.2.016,
	title={{Renormalization approach to the superconducting Kondo model}},
	author={Steffen Sykora and Tobias Meng},
	journal={SciPost Phys.},
	volume={13},
	pages={016},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.13.2.016},
	url={https://scipost.org/10.21468/SciPostPhys.13.2.016},
}