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Kondo physics in the Josephon junction with DIII-class topological and s-wave superconductors

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2015

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Gong, W. J.

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https://doi.org/10.1209/0295-5075/112/57002
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EPL (Europhysics Letters). 2015, 112(5), 57002. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/112/57002

Zusammenfassung

We discuss the Kondo effect in the Josephson junction formed by the indirect coupling between a one-dimensional DIII-class topological and s-wave superconductors via a quantum dot. By performing the Schrieffer-Wolff transformation, we find that the single-electron occupation in the quantum dot induces various correlation modes, such as the Kondo and singlet-triplet correlations between the quantum dot and the s-wave superconductor and the spin-exchange correlation between the dot and Majorana doublet. Also, it modifies the Josephson effect by introducing the high-order anisotropic Kondo-like correlation and extra spin-exchange correlations. However, the Kondo temperature is still governed by the antiferromagnetic correlation between the dot and s-wave superconductor. We believe that this work shows the fundamental property of the DIII-class topological superconductor.

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ISO 690GAO, Zhen, W. J. GONG, 2015. Kondo physics in the Josephon junction with DIII-class topological and s-wave superconductors. In: EPL (Europhysics Letters). 2015, 112(5), 57002. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/112/57002
BibTex
@article{Gao2015Kondo-39785,
  year={2015},
  doi={10.1209/0295-5075/112/57002},
  title={Kondo physics in the Josephon junction with DIII-class topological and s-wave superconductors},
  number={5},
  volume={112},
  issn={0295-5075},
  journal={EPL (Europhysics Letters)},
  author={Gao, Zhen and Gong, W. J.},
  note={Article Number: 57002}
}
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