Freiburg 2019 – wissenschaftliches Programm
Sitzungen | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
FM: Fall Meeting
FM 70: Special Session: Topology
FM 70.2: Invited Talk
Donnerstag, 26. September 2019, 11:30–12:00, Audi Max
Topological superconductors and Majorana fermions — •Yoichi Ando — Physics Institute II, University of Cologne, 50937 Cologne, Germany
In this talk, I will give a general introduction to topological superconductivity and Majorana fermions [1], and explain why spin-orbit coupling is useful for generating such novel states of matter. The distinction between dispersive Majorana fermions and localized Majorana zero modes is emphasized; the former are mobile quasiparticles to contribute to novel transport properties in superconducting surface/edge, while the latter obey the non-Abelian statistics and can be used for topological quantum computing. As a material class to realize the former, I will elaborate on the nematic topological superconductors derived from the topological insulator Bi2Se3. For the localized Majorana zero modes, I will introduce the concept for using them for topological quantum computing and present our efforts to realize them in proximitized topological insulators.
[1] M. Sato and Y. Ando, Rep. Prog. Phys. 80, 076501 (2017).