Seminar: Berry phase effects in the layered topological metals

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The AGH UST Academic Centre for Materials and Nanotechnology invites you to participate in the ACMiN Seminar, which will take place on November 25, 2021, at 14:00 in online form, on the UPEL platform.

The lecture titled “Berry phase effects in the layered topological metals” will be given by professor Wojciech Brzezicki (Jagiellonian University & International Centre for Interfacing Magnetism and Superconductivity with Topological Matter – MagTop, Poland).

Use this link to participate. 

Abstract

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.

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