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Topological Insulators and Superconductors

Physikalisches Kolloquium


Prof. Dr. Yoichi Ando


20.10.2017 15:45


Otto Lehmann Lecture Hall, Bldg. 30.22, KIT Campus South


University of Cologne


Prof. Dr. Jörg Schmalian


Topological insulators and superconductors are new quantum states of matter that are characterized by nontrivial topological structures of the Hilbert space. Recently, they attract a lot of attention because of the appearance of exotic quasiparticles such as spin-momentum-locked Dirac fermions or Majorana fermions on their edge/surface, which hold promise for various novel applications. In particular, localized zero-energy Majorana mode is expected to obey non-Abelian statistics and enable topological quantum computing. In this talk, I will introduce the basics of those materials and present some of the key contributions we have made in this new frontier, such as the synthesis of bulk-insulating topological insulators, discovery of topological crystalline insulator, and the discovery of nematic topological superconductor.