Seminarium Oddziału Badań Magnetyków
Microsoft Teams
Linear and nonlinear spin-orbit driven transport phenomena in graphene-based van-der-Waals structures and topological insulators
dr hab. Anna Dyrdał, prof. UAM
Wydział Fizyki Uniwersytetu im. Adama Mickiewicza w Poznaniu
Seminarium odbędzie się 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 remotely in 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:
Spin-orbit interaction is responsible for certain states of matter, like chiral spin textures, surface spin-polarized states, and electrical control of the electron spin. Accordingly, the spin-orbit driven-phenomena, such as the spin Hall effect and the current-induced spin polarization (a.k. Edelstein effect), are crucial not only due to the fundamental aspects of solid-state physics but also because of possible applications in spintronics.
I will focus on graphene-based van-der-Waals heterostructures where one can observe not only current-induced spin polarization and Hall effects but also topological phase transitions. Next, I will provide an overview of recent studies on nonlinear magnetotransport in selected 2D systems (TIs, perovskite oxides), where the spin-orbit interaction is strong and induces sizable current-induced spin polarization and nonlinear effects (e.g., bilinear magnetoresistance and bilinear planar Hall effect). Finally, I will discuss a method that we proposed recently for the determination of the effective Rashba parameter from the analysis of bilinear response in the angle-dependent magnetotransport experiments.
[1] A. Dyrdał, J. Barnaś, 2D Mater. 4, 034003 (2017)
[2] P. Högl, T. Frank, K. Zollner, et al., PRL 124, 136403 (2020)
[3] A. Dyrdał, J. Barnaś, A. Fert, PRL 124, 046802 (2020)
[4] D.C. Vaz, F. Trier, A. Dyrdał et al., Phys. Rev. Mater. 4, 071001 (R) (2020)
