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DTSTART;TZID=Europe/Paris:20230413T140000
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DTSTAMP:20230412T151922Z
CREATED:20230412T151922Z
LAST-MODIFIED:20230412T151922Z
UID:24208-1681394400-1681405200@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Superconductivity mediated by Rashba-like coupling to polar modes\nMaria Gastiasoro\, Donostia International Physics Center \nMotivated by experimental evidence suggesting a connection between superconductivity and ferroelectricity in bulk SrTiO3 and KTaO3-based heterostructures\, we study a pairing mechanism based on spin-orbit assisted coupling between the conduction electrons and the soft ferroelectric modes. We use ab initio computations supplemented with a microscopic model to show robust Rashba-like coupling and BCS pairing constant. The ab initio computations enable us to go beyond the linear-in-momentum conventional Rashba-like interaction and naturally explain a dome behaviour. The dome is attributed to a momentum dependent quenching of the angular momentum due to a competition between spin-orbit and hopping energies. These results make the Rashba dynamic coupling to the ferroelectric soft mode a compelling pairing mechanism in doped polar metals. \nWhere: \n\nRoom Boreau\, Building C\, 2nd Floor\nZoom link: https://espci.zoom.us/j/84513228025?pwd=a20yK3daWTBmRDJCQ2F4SU03cU9PZz09\nID: 845 1322 8025\nPassword: J.Valasek\n\n\nContact/to subscribe or unsubscribe: seminaires-lpem@espci.fr
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-109/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
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