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PIRSA:16080046

Hydrodynamic theory of transport in Dirac and Weyl semimetals

APA

Lucas, A. (2016). Hydrodynamic theory of transport in Dirac and Weyl semimetals. Perimeter Institute for Theoretical Physics. https://pirsa.org/16080046

Andrew Lucas Stanford University

Talk numberPIRSA:16080046

Abstract

I will discuss recent progress in understanding the consequences of hydrodynamic electron flow on measurable transport properties of metals, focusing on metals where the electrons behave as a charge neutral relativistic plasma. In graphene, I will connect our theoretical models with experimental data and show how we can explain features of transport in graphene that are inconsistent with quasiparticle transport. I will then discuss the extension of these results to Weyl semimetals, which are modeled by a system of multiple chiral fluids. Negative magnetoresistance can occur in both electric and thermal transport; the latter is a consequence of a distinct axial-gravitational anomaly. Future transport experiments on Weyl semimetals can discover this exotic type of anomaly in the lab.