Seminarium Oddziału Badań Magnetyków
sala nr 6 (bud. II)
Characteristic Electronic States of Eu-based Compounds
Prof. Yoshichika Onuki
RIKEN and Tokyo Metropolitan University, Japan
Seminarium odbędzie się w sali p6b2 i zdalnie w aplikacji Microsoft Teams. W celu wzięcia udziału w wydarzeniu należy dołączyć do zespołu Seminarium OBM. Można do niego dołączyć na stałe przy użyciu kodu dostępu ol7omod (dotyczy to osób posiadających konto w domenie intibs.pl, pozostałe osoby proszę o kontakt z prof. dr. hab. Adamem Pikulem, prof. INTiBS PAN ())
The seminar will be held in the room p6b2, and remotely via the Microsoft Teams application. In order to participate in the event, you must join the Seminarium OBM team. You can join it permanently using the access code ol7omod (this applies to people with an account in the intibs.pl domain, other people please contact Prof. Adam Pikul , Prof. INTiBS PAN ())
Abstract:
We review the electronic states of single-crystalline EuT2X2 ( T : transition metal and X : Si and Ge ) and their related compounds, together with an effect of pressure on these compounds [1]. Eu ions in most of the Eu compounds are divalent ( Eu2+) and the Eu2+ compounds order magnetically at low temperatures. The divalent electronic state of these Eu compounds can be changed into the trivalent ( Eu3+) electronic state by applying pressure. Pressure is a powerful tool for exploring novel phenomena.
In addition, we present the experimental results of the skyrmion lattice EuPtSi with the cubic chiral structure ( P213, T4, No. 198 ), comparing with those in MnSi with the same structure.
[1] Y. Onuki, M. Hedo, and F. Honda, J. Phys. Soc. Jpn. 89, 102001 (2020).
