MtPh

An Optical Route to Probing Topology

date
21.06.2018 
time
02:00 PM - 03:00 PM 
speaker
Prof. Dr. Kenneth Burch 
affiliation
LASE - Laboratory for Assembly and Spectroscopy of Emergence, Boston College 
language
en 
main topic
Materials: Superconductors, Magnetic Materials, Nano Structures
subtopics
Physics: Condensed Matter (incl. Soft, Solid)
host
Grit Rötzer 
abstract

A key challenge in condensed matter is measuring the non-trivial topology responsible for novel phases. In this talk I will outline our recent efforts to reveal non-trivial topology with optical techniques. First I will discuss recent Raman results indicating fractional statistics in RuCl3. This is a natural and long sought consequence of the long range entanglement associated with the proximity to a Kitaev spin liquid state. In the second half of the talk I will focus on our efforts to measure and create a chiral imbalance in the Weyl semimetal TaAs. Specifically using new FIB fabricated mesoscopic devices we have succeeded in measuring photocurrents at room temperature associated with the electron chirality and Berry curvature.
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Last update: 21.06.2018 00:05.

venue 

Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (B3E.26, IFW Dresden) 
Helmholtzstraße 20
01069 Dresden
homepage
http://www.ifw-dresden.de 

organizer 

Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (IFW)
Helmholtzstraße 20
01069 Dresden
homepage
http://www.ifw-dresden.de 
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