Polar Kerr effect from chiral-nematic charge order
Polar Kerr effect from chiral-nematic charge order
We analyze the polar Kerr effect in an itinerant electron system on a square lattice in the presence of a composite charge order proposed for the pseudogap state in underdoped cuprates. This composite charge order preserves discrete translational symmetries, and is ``chiral nematic'' in the sense that it breaks time-reversal …