Condensed Matter Seminar, Steve Kivelson, Stanford, "Electron Nematic Phases in Highly Correlated Electron Systems"

Mon, Feb 22, 2016, 1:15 pm to 2:30 pm
Location: 
PCTS Seminar Room
Phases of the strongly interacting electron fluid which spontaneously break the point-group symmetries of the host crystal can sometimes be characterized as “electron nematic phases.” Such phases increasingly appear to play a significant role in the physics of a variety of “interesting” materials, including the Cu and Fe based high temperature superconductors. I will review some of the evidence that this is a useful perspective (as opposed to dismissing the phenomena as an uninteresting reflection of subtle structural changes in the crystal), and will also summarize some of the theoretical progress in understanding the origins of electronic nematicity, the quantum critical phenomena associated with the transition to the nematic state, and the effect of nematic order and fluctuations on other properties of the electron fluid.