Seminarium Fizyki Materii Skondensowanej

Topological insulators are characterized by a skyrmion-like (pseudo)spin texture of electronic bands in momentum space, giving rise to nontrivial Chern numbers and gapless edge states. This talk will explore an intricate connection between the nontrivial band topology and quantum electron transport in some representative topological systems. I will in particular address the topological aspects of the minimal conductivity, backscattering processes, weak antilocalization and the universal magnetoeletric effect in HgTe as well as unconventional triplet superconductivity and Majorana fermions in candidate topological superconductors.