Chiral plasmon in gapped Dirac systems

Thursday, March 29, 2018 - 4:00pm - 5:00pm
Lind 409
Tony Low (University of Minnesota, Twin Cities)
We study the electromagnetic response and surface electromagnetic modes in a generic gapped Dirac material under pumping with circularly polarized light. The valley imbalance due to pumping leads to a net Berry curvature, giving rise to a finite transverse conductivity and the appearance of nonreciprocal chiral edge modes.