Microwave Susceptibility Observation of Interacting Many-Body Andreev States
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
Dokumenter
- PhysRevLett.129.227701
Forlagets udgivne version, 809 KB, PDF-dokument
Electrostatic charging affects the many-body spectrum of Andreev states, yet its influence on their microwave properties has not been elucidated. We developed a circuit quantum electrodynamics probe that, in addition to transition spectroscopy, measures the microwave susceptibility of different states of a semiconductor nanowire weak link with a single dominant (spin-degenerate) Andreev level. We found that the microwave susceptibility does not exhibit a particle-hole symmetry, which we qualitatively explain as an influence of Coulomb interaction. Moreover, our state-selective measurement reveals a large, p-phase shifted contribution to the response common to all many-body states which can be interpreted as arising from a phase-dependent continuum in the superconducting density of states.
Originalsprog | Engelsk |
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Artikelnummer | 227701 |
Tidsskrift | Physical Review Letters |
Vol/bind | 129 |
Udgave nummer | 22 |
Antal sider | 7 |
ISSN | 0031-9007 |
DOI | |
Status | Udgivet - 21 nov. 2022 |
Links
- https://arxiv.org/pdf/2112.05624.pdf
Indsendt manuskript
ID: 337351830