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Special ICMT Seminar: "Frustrated Magnetism in Materials with Kagome Lattices"

SpeakerDr. Bryan Clark (Station Q)
Date Feb 28, 2013
Time 11:00 am  
Location 190 ESB
Sponsor Department of Physics
Contact Jason Maldonado
Phone 217-300-6431
Event type Seminar/Symposium
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There are a number of materials including Herbertsmithite and Volborthite whose microscopic degrees of freedom involve uncoupled (distorted) kagome layers of spins.  These materials have been at the forefront of the search for spin liquids.  The kagome lattice causes geometric frustration which often can interfere with the formation of  ordered states opening the possibility for a wide range of exotic phases.  In this talk, we  explore which states in the  variational subspace of projected BCS wave-functions are potential states for these materials.  In particular, we discover a new low-energy variational state: the striped spin liquid crystal.  This state forms stripes doubling the unit cell in one direction. We describe its properties and its potential relation to the different kagome materials.

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