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SUMMARY:Effects of interactions on Lifshitz transition: taking sodium coba
 ltate as a possible example. - Dr. Jospeh Betouras\, Dept. of Physics\, Lo
 ughborough University.
DTSTART:20151118T111500Z
DTEND:20151118T121500Z
UID:TALK61001@talks.cam.ac.uk
CONTACT:Helen Verrechia
DESCRIPTION:Topological transitions of the Fermi Surface (Lifshitz) is an 
 old concept\, that has started playing a fundamental role in the physics o
 f many quantum systems. The effects of interactions remain unresolved. In 
 this talk\, after introducing the main concepts of Lifshitz as well as Pom
 eranchuk instabilities of the Fermi surface as well as a proposal for a co
 ld atom experiment\, I will focus on the recent physics of sodium cobaltat
 es (NaxCoO2) exposed under the hypothesis of a Lifshitz transition.
LOCATION:Mott Seminar Room (531)\, Cavendish Laboratory\, Department of Ph
 ysics
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