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Field-induced transition from even to odd parity superconductivity in CeRh2As2

Prof. Elena Hassinger, Max Planck Institute for Chemical Physics of Solids

Abstract: I will report on the discovery of unconventional superconductivity in CeRh2As2. Although it appears at temperatures below 1 K, the superconducting state is extremely robust under the application of magnetic fields and presents a unique phase diagram.

Most interestingly, a field-induced phase transition within the superconducting state appears for c-axis fields in magnetisation, susceptibility and magnetostriction indicating two separate superconducting states.
The phase diagram can be understood by taking into account the staggered spin-orbit coupling at the Ce position. In that picture, the magnetic field drives a transition from even to odd parity superconductivity. The angle dependence of the critical fields strongly reinforces this interpretation. In the end, I will also give information on the ordered phases found in the normal state.
 

Détails

Date :
19 mai 2022
Heure :
14 h 00 - 15 h 00
Catégorie d’Évènement:

Organisateur

Elena Hassinger

Lieu

ESPCI Paris
10 Rue Vauquelin
Paris, 75005 France
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Phone
01 40 79 44 00
Voir Lieu site web
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