Flat Club - Interplay of magnetism and band structure in EuCd2As2 - Ana Akrap

03.03.2023 12:00 – 14:00

Interplay of magnetism and band structure in EuCd2As2
Prof. Ana Akrap, University of Fribourg

EuCd2As2 has emerged as a topological material where magnetism may produce strong effects. This compound has been understood as a candidate Weyl semimetal, based mostly on transport and photoemission measurements. I will present our recent results on samples in which we control the carrier concentration through chemical synthesis. We find magneto-optical evidence of a sizeable band gap, remarkably sensitive to the local Eu magnetism. Our results contradict the current consensus on the ground state of this compound, bringing into question its topological nature.

Reference: Santos-Cottin et al., EuCd2As2: a magnetic semiconductor https://arxiv.org/abs/2301.08014

Lieu

Bâtiment: Ecole de Physique

Auditoire Stueckelberg
Pizza: 12:00, Start discussion: 12:30

Organisé par

Département de physique de la matière quantique

Intervenant-e-s

Ana Akrap, University of Fribourg

entrée libre

Classement

Catégorie: Conférence - débat