Événements

Séminaire IQ - Marcello Civelli

Date : 14 juillet 2022 11:00

Type : Institut Quantique

Lieu : Auditorium de l'IQ D9

Lieu : Auditorium de l'IQ

et 

https://umontreal.zoom.us/j/88348838131?pwd=QUhUcWUzNWlOQ3BVZFFnMlNXSFhPQT09

Title: Odd-frequencysuperconducting pairing induced by magnetic impurities

Marcello Civelli, Laboratoire de Physiquedes Solides, Université Paris-Saclay CNRS, Orsay France

Invité de André-Marie Tremblay

Abstract : We show that a magnetic impurity embedded ina conventional s-wave superconductor can induce odd-frequency unconventionalsuperconductivity, which is even in both space and spin variables but odd undertime inversion. We in particular derive a proportionality relation between theeven-frequency component of the local electron density of states and theimaginary part of the odd-frequency local pairing function. By exploiting thisrelation, we show the experimental realization of the odd-frequency pairing inscanning tunneling microscopy spectra. We finally propose that magneticimpurities diluted in a conventional superconductor can give origin to asuperconducting state displaying the odd-frequency component.

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