Microwave signatures of Majorana states in a topological Josephson junction
| Type of Publication: | Journal article |
| Publication status: | Published |
| Author: | Väyrynen, Jukka I.; Rastelli, Gianluca; Belzig, Wolfgang; Glazman, Leonid I. |
| Year of publication: | 2015 |
| Published in: | Physical Review B ; 92 (2015), 13. - 134508. - ISSN 1098-0121. - eISSN 1550-235X |
| DOI (citable link): | https://dx.doi.org/10.1103/PhysRevB.92.134508 |
| Summary: |
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 |
| Bibliography of Konstanz: | Yes |
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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
@article{Vayrynen2015Micro-32315, title={Microwave signatures of Majorana states in a topological Josephson junction}, year={2015}, doi={10.1103/PhysRevB.92.134508}, 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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