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

Event Type
Department of Physics
190 ESB
Feb 28, 2013   11:00 am  
Dr. Bryan Clark (Station Q)
Originating Calendar
Physics - Institute for Condensed Matter Theory Seminar

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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