Quantum criticality of the heavy-fermion antiferromagnet YbAgGe

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Date/Time:Wednesday, 13 Nov 2013 - Wednesday, 13 Nov 2013
Location:ROOM 18 PHYSICS
Phone:515-294-5630
Channel:Condensed Matter Physics
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George Schmiedeshoff

Occidental College

Compounds such as YbRh2Si2 with its (2nd order) quantum critical point and Sr3Ru2O7, which is close to a (1st order) quantum critical end point, have become models of quantum critical behavior.

After introducing YbAgGe I will present and discuss thermal expansion and magnetostriction data and argue that YbAgGe exhibits multiple kinds of quantum criticality.