Events

Florent Condaminas presents

Etude des propriétés supraconductrices dans les couches minces d’aluminium par spectroscopie de contact ponctuel : supraconductivité locale et couplage électron-phonon

Monday, December 2nd 2024 at 13:30

Seminar room – Building A – CNRS

The defence will be in French.

Abstract: The origin of the “abnormal” increase in the critical temperature of aluminum thin films when their thickness tends towards zero remains widely debated. Our point contact spectroscopy measurements suggest significant changes in the Eliashberg function as a function of the thickness of the film but nevertheless they do not directly explain the increase in their critical temperature. These measurements also indicate a strong distribution of the local critical temperature (probably related to a grain size distribution) with the presence of local superconductivity, up to temperatures an order of magnitude higher than the Tc determined by transport !