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- W3096105909 abstract "Odd frequency (odd-$omega$) electron pair correlations naturally appear at the interface between BCS superconductors and other materials. The detection of odd-$omega$ pairs, which are necessarily non-local in time, is still an open problem. The main reason is that they do not contribute to static measurements described by time-local correlation functions. Therefore, dynamical measurements, which depend on non-local time correlations, are suitable for detecting these pairs. In this work, we study the signatures of odd-$omega$ pairs in the supercurrent noise through a weak link between two superconductors at different superconducting phases. We show that the finite frequency current noise can be decomposed into three different contributions coming from even frequency (even-$omega$), odd-$omega$ pair amplitudes, and electron-hole correlation functions. Odd-$omega$ pairing, which is inter-lead (between electrons at different sides of the junction), provides a positive contribution to the noise, becoming maximal at a superconducting phase difference of $pi$. In contrast, intra-lead even-$omega$ pair amplitude tends to reduce the noise, except for a region close to $pi$, controlled by the transmission of the junction." @default.
- W3096105909 created "2020-11-09" @default.
- W3096105909 creator A5043618515 @default.
- W3096105909 creator A5055821119 @default.
- W3096105909 creator A5074881571 @default.
- W3096105909 date "2020-11-06" @default.
- W3096105909 modified "2023-10-03" @default.
- W3096105909 title "Signatures of odd-frequency pairing in the Josephson junction current noise" @default.
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- W3096105909 doi "https://doi.org/10.1103/physrevresearch.2.043193" @default.
- W3096105909 hasPublicationYear "2020" @default.
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