Condensed matter seminar
Vladimir Juricic (Nordita)
112:028 (Nordita South)
Tuesday 17 October
11:00 - 12:00
The second part of the talk is devoted to the role of the long-range Coulomb interaction in a simple (n=1) Weyl semimetal. In particular, I will show that this interaction leads to a universal enhancement of the zero-temperature optical conductivity that depends solely on the number of Weyl points at the Fermi level . This scaling is a remarkable consequence of an interplay between the quantum-critical nature of an interacting Weyl liquid, marginal irrelevance of the long-range Coulomb interaction and the violation of hyperscaling in three dimensions, and can directly be measured in recently discovered Weyl and Dirac materials.
 B. Roy, P. Goswami, and V. Juricic, Phys. Rev. B 95, 201102 (R) (2017).
 B. Roy and V. Juricic, arXiv; 1707.08564 (to appear in Phys. Rev. B).