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Professor Dr. Yoichi Ando, II. Physikalisches Institut (12.04.2016)

Topological Insulators and Superconductors

 

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-helical Dirac fermions or Majorana fermions on their surfaces, which hold promise for various novel applications. In this colloquium, I will introduce the basics of those materials and present some of the key contributions we have made in this new frontier.