University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Wednesday, April 8th 2015
3:35 pm:
Speaker: Steven Kivelson, Stanford University
Subject: Quenched disorder and vestigial nematicity in correlated electronic systems
Refreshments served in Room 216 Physics after colloquium

Intermediate phases with “vestigial order” occur when the spontaneously broken symmetries of a “fully ordered” groundstate are restored sequentially as a function of increasingly strong thermal or quantum fluctuations, or of increasing magnitude of quenched randomness. From this perspective, a large number of developments in the field of highly correlated systems – in particular the remarkable proliferation of cases in which electron nematic phases and their relatives appear as significant players in the physics of “interesting” materials - can be treated as variations on the same underlying theme. Recent experiments probing charge order in the pseudo-gap regime of the hole-doped cuprate high-temperature superconductors and nematic order in the Fe based superconductors are interpreted in light of these results.

Faculty Host: Rafael Fernandes

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