Microwave signatures of Majorana states in a topological Josephson junction

Väyrynen, Jukka I.; Rastelli, Gianluca; Belzig, Wolfgang; Glazman, Leonid I.

Microwave signatures of Majorana states in a topological Josephson junction

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Date

2015

Authors

Väyrynen, Jukka I.

Rastelli, Gianluca

Belzig, Wolfgang

Glazman, Leonid I.

DOI (citable link)

10.1103/PhysRevB.92.134508

Collections

Physik
Zukunftskolleg

Publication type

Journal article

Publication status

Published

Published in

Physical Review B ; 92 (2015), 13. - 134508. - ISSN 1098-0121. - eISSN 1550-235X

Abstract

We find the admittance of a topological Josephson junction Y(ω,φ0,T) as a function of frequency ω, the static phase bias φ0 applied to the superconducting leads, and temperature T. The dissipative part of Y allows for spectroscopy of the subgap states in the junction. The resonant frequencies ωM,n(φ0) for transitions involving the Majorana (M) doublet exhibit characteristic kinks in the φ0 dependence at φ0=π. The kinks, associated with decoupled Majorana states, remain sharp and the corresponding spectroscopic lines are bright at any temperature, as long as the leads are superconducting. The developed theory may help with regard to extracting quantitative information about Majorana states from microwave spectroscopy.

Subject (DDC)

530 Physics

Cite This

ISO 690

VÄYRYNEN, Jukka I., Gianluca RASTELLI, Wolfgang BELZIG, Leonid I. GLAZMAN, 2015. Microwave signatures of Majorana states in a topological Josephson junction. In: Physical Review B. 92(13), 134508. ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.92.134508

BibTex

@article{Vayrynen2015Micro-32315,
  year={2015},
  doi={10.1103/PhysRevB.92.134508},
  title={Microwave signatures of Majorana states in a topological Josephson junction},
  number={13},
  volume={92},
  issn={1098-0121},
  journal={Physical Review B},
  author={Väyrynen, Jukka I. and Rastelli, Gianluca and Belzig, Wolfgang and Glazman, Leonid I.},
  note={Article Number: 134508}
}

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Bibliography of Konstanz

Yes