25.11.2021

Seminarium ACMiN: Berry phase effects in the layered topological metals


Akademickie Centrum Materiałów i Nanotechnologii AGH zaprasza na seminarium, które odbędzie się 25 listopada 2021 r. o godz. 14.00 w formie zdalnej, na platformie UPEL.

Wykład zatytułowany „Berry phase effects in the layered topological metals” wygłosi dr hab. Wojciech Brzezicki (Uniwersytet Jagielloński oraz International Centre for Interfacing Magnetism and Superconductivity with Topological Matter – MagTop).

Link dla uczestników

Streszczenie

We study the effects related to the Berry phases along Fermi cross-sections in two types of systems: (i) multilayers of topological crystalline insulator SnTe [1] and (ii) 2D heterostructures of transition metal oxides [2,3]. In case (i) we show that the mirror symmetry breaking can explain the features related to the weak antilocalization whereas in case (ii) we show that the observed sign change of the Hall conductance can be related to the topology of the occupied bands.

1. A. Kazakov, W. Brzezicki, T. Hyart, ...,T. Dietl, Phys. Rev. B 103, 245307 (2021)., 2. T.C. van Thiel, W. Brzezicki, C. Autieri, et al., Phys. Rev. Lett. 127, 127202 (2021), 3. D. J. Groenendijk, C. Autieri, T. C. van Thiel, W. Brzezicki, ..., A. D. Caviglia, Phys. Rev. Res. 2, 023404 (2020).

I acknowledges support by Narodowe Centrum Nauki (NCN, National ScienceCentre, Poland) Sonata Bis 9 Project No. 2019/34/E/ST3/00404.