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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2847
DTSTART:20121107T213000Z
DURATION:PT1H0M0S
DTSTAMP:20240319T044353Z
LAST-MODIFIED:20121102T190135Z
LOCATION:2241 Chamberlin Hall (coffee at 4:30 pm)
SUMMARY:Electronic Liquid Crystalline Phases in Highly Correlated Elec
tronic Systems\, Physics Department Colloquium\, Steven Kivelson\, Sta
nford University
DESCRIPTION:In one extreme\, where the interactions are sufficiently w
eak compared to the interactions\, electrons form a "Fermi liquid" - t
he state that accounts for the properties of simple metals. In the ot
her extreme\, where the interactions are dominant\, the electrons form
various "Mott" insulating or "Wigner crystalline" phases\, often char
acterized by broken spatial and/or magnetic symmetries. Corresponding
charge and/or magnetically ordered insulating phases are common in na
ture. Between these two extremes lie highly correlated electronic flu
ids\, and correspondingly a host of interesting and perplexing materia
ls\, including such diverse systems as the cuprate and iron-based high
temperature superconductors\, the failed metamagnet Sr3Ru<
sub>2O7\, and a variety of quantum Hall fluids. Some
insight into this rich intermediate coupling regime can be obtained f
rom viewing it as a partially melted electron solid\, rather than as a
strongly interacting gas. Here\, analogies with the liquid crystalli
ne phases of complex classical fluids provide useful guidance for a ne
w approach to this key problem in condensed matter physics.
URL:https://www.physics.wisc.edu/events/?id=2847
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