Inductive microwave response of Yu-Shiba-Rusinov states
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Dokumenter
- PhysRevB.105.054503
Forlagets udgivne version, 3,25 MB, PDF-dokument
We calculate the frequency-dependent admittance of a phase-biased Josephson junction spanning a magnetic impurity or a spinful Coulomb-blockaded quantum dot. The local magnetic moment gives rise to Yu-Shiba-Rusinov bound states, which govern the subgap absorption as well as the inductive response. We model the system by a superconducting spin-polarized exchange-cotunnel junction and calculate the linear current response to an ac bias voltage, including its dependence on phase bias as well as particle-hole and source-drain coupling asymmetry. The corresponding inductive admittance is analyzed and compared to results of a zero bandwidth, as well as an infinite-gap approximation to the superconducting Anderson model. All three approaches capture the interaction-induced 0-π transition, which is reflected as a discontinuity in the adiabatic inductive response.
Originalsprog | Engelsk |
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Artikelnummer | 054503 |
Tidsskrift | Physical Review B |
Vol/bind | 105 |
Udgave nummer | 5 |
Antal sider | 19 |
ISSN | 2469-9950 |
DOI | |
Status | Udgivet - 3 feb. 2022 |
Links
- https://arxiv.org/pdf/2112.11261.pdf
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