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Magnetization plateaus and sublattice ordering in easy-axis kagome lattice antiferromagnets

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Title Magnetization plateaus and sublattice ordering in easy-axis kagome lattice antiferromagnets
 
Creator SEN, A
DAMLE, K
VISHWANATH, A
 
Subject frustration
 
Description We study kagome lattice antiferromagnets where the effects of easy-axis single-ion anisotropy (D) dominates over the Heisenberg exchange J. For S >= 3/2, virtual quantum fluctuations help lift the extensive classical degeneracy. We demonstrate the presence of a one-third magnetization plateau for a broad range of magnetic fields J(3)/D(2)less than or similar to B less than or similar to JS along the easy axis. The fully equilibrated system at low temperature on this plateau develops an unusual nematic order that breaks sublattice rotation symmetry but not translation symmetry; however, extremely slow dynamics associated with this ordering is expected to lead to glassy freezing of the system on intermediate time scales.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T22:01:33Z
2011-12-26T12:49:58Z
2011-12-27T05:35:50Z
2011-07-16T22:01:33Z
2011-12-26T12:49:58Z
2011-12-27T05:35:50Z
2008
 
Type Article
 
Identifier PHYSICAL REVIEW LETTERS, 100(9), -
0031-9007
http://dx.doi.org/10.1103/PhysRevLett.100.097202
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4540
http://hdl.handle.net/10054/4540
 
Language en