Seminar über die Physik der kondensierten Materie (SFB/TRR173 Spin+X und SFB/TR288 Kolloquium, TopDyn-Seminar)

March 6, 2014 at 2 p.m. in Minkowski-Raum, 05-119, Staudingerweg 7

Univ-Prof. Dr. Jure Demsar
Univ.-Prof. Dr. Hans-Joachim Elmers
Univ.-Prof. Dr. Mathias Kläui
Univ.-Prof. Dr. Thomas Palberg

Note: Ansprechpartner: Herr J. Sinova

Transport in topological insulator thin films: weak localization and universal conductance fluctuations
Dr. Hristo Velkov (Freie Universität Berlin)


In this talk I will present the work I did in my master thesis. Motivated by the experimental difficulty to produce topological insulators with pure surface-state conduction, we study the effect that the bulk can have on the transport properties of the system. In particular, we focus on the weak localization (WL) and universal conductance fluctuations (UCF) physics. First, I will present the analysis of the bulk and the surface separately and then discuss WL and UCF when a tunneling-based coupling is introduced.