The gravity of Weyl: tabletop signatures of the mixed axial-gravitational anomaly

Datum

08.09.2017

Zeit

10:30 - 11:30

Sprecher

Dr. Tobias Meng

Zugehörigkeit

Institute for Theoretical Physics, TU Dresden

Sprache

en

Hauptthema

Materialien

Andere Themen

Materialien, Physik

Host

Grit Rötzer

Beschreibung

Topological semimetals have recently been one of the most active topics in solid state physics, and provide an exceptionally fruitful meeting point for fields as diverse as chemistry, band structure calculations and high-energy field theory. This talk will discuss the observation of quantum anomalies in Weyl semimetals. These anomalies are rooted in an incompatibility of quantum mechanics and classical conservation laws. In particular, I will focus on recent measurements demonstrating the presence of the mixed axial-gravitational anomaly in Weyl semimetals. In contrast to earlier expectations, which would for example search for this phenomenon in the hydrodynamics of neutron stars, we used a conceptually simple thermoelectric transport experiment to demonstrate the presence of the mixed axial-gravitational anomaly in the Weyl semimetal NbP. .

Links

• Seminars at the IFW

Letztmalig verändert: 08.09.2017, 09:47:00