Faculty of Mathematics, Physics
and Informatics
Comenius University Bratislava

Condensed Matter Seminar - Leonid Golub (26.4.2024)

Friday 26.4.2024 at 14:00, Lecture room F1 109

28. 03. 2024 21.51 hod.
By: František Herman

Leonid Golub (University of Regensburg):
Weak localization phenomenon

Weak localization (WL) is a quantum transport phenomenon that occurs due to the interference of electronic de Broglie waves. WL is observed in metals and semiconductors as a correction to the conductivity, which anomalously depends on temperature and magnetic field. This interference can be partially disrupted by various factors such as inter-electron scattering, spin relaxation, or inter-valley scattering and valley-dependent splittings in multi-valley systems. During the talk, we will discuss the calculation of the WL conductivity correction and apply the formalism to the problem of WL in spin-orbit coupled graphene.