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PGI Colloquium:

Prof. Dr. Bogdan A. Bernevig,
Princeton University, New Jersey, USA

PGI Lecture Hall, Building 04.8, 2nd Floor, Room 365

24 May 2019 11:00

Topological Quantum Chemistry and The Topological Periodic Table of Materials

BernevigCopyright: https://topologicalquantumchemistry.com/#/

One newly discovered characterization of insulators, metals and semimetals is based on their topological properties. Topological insulators do not conduct in the bulk but, unlike their non-Topological counterparts, exhibit perfect conduction on their surface.

Topological metals conduct in the bulk, but, unlike their non-Topological counterparts cannot be gapped due to a special type of protection that allows their low energy electrons to exhibit esoteric phenomena such as chiral anomaly or non-local transport.

It was initially thought that the materials exhibiting these phenomena are very special and unique amongst all of the 140000 compounds known to humankind. We will present a review of these ideas and properties of topological materials. We will then show how, using a new theory called Topological Quantum Chemistry, we are able to now catalogue a large subset (35000) of all the topological materials that can possibly exist in nature.

We then apply our theory to find that more than 27% of all known compounds - including some of the most interesting materials in nature - are actually topological. We hence live in a topological world!


Dr. Gustav Bihlmayer
Phone: +49 2461 61-4677
Fax: +49 2461 61-2850
email: g.bihlmayer@fz-juelich.de