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Vortex dynamics and frustration in two-dimensional triangular chromium lattices

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Title Vortex dynamics and frustration in two-dimensional triangular chromium lattices
 
Creator HEMMIDA, M
VON NIDDA, HAK
BUTTGEN, N
LOIDL, A
ALEXANDER, LK
NATH, R
MAHAJAN, AV
BERGER, RF
CAVA, RJ
SINGH, Y
JOHNSTON, DC
 
Subject heisenberg-antiferromagnet
magnetic-properties
exchange integrals
phase-transitions
xy-model
licro2
nacro2
order
systems
oxides
antiferromagnetic materials
frustration
hydrogen compounds
lithium compounds
neel temperature
paramagnetic resonance
sodium compounds
spin dynamics
 
Description The spin dynamics of the two-dimensional (2D) triangular lattice antiferromagnets HCrO(2), LiCrO(2), and NaCrO(2) is investigated by electron spin resonance. In these oxides, on approaching the Neacuteel temperature T(N) from above, the divergence of the temperature dependent linewidth is well described in terms of a Berezinskii-Kosterlitz-Thouless scenario due to magnetic vortex-antivortex pairing. A refined analysis suggests analogies to the melting scenario of a 2D triangular lattice described by Nelson, Halperin, and Young.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-17T01:25:16Z
2011-12-26T12:50:02Z
2011-12-27T05:35:58Z
2011-07-17T01:25:16Z
2011-12-26T12:50:02Z
2011-12-27T05:35:58Z
2009
 
Type Article
 
Identifier PHYSICAL REVIEW B, 80(5), -
1098-0121
http://dx.doi.org/10.1103/PhysRevB.80.054406
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4579
http://hdl.handle.net/10054/4579
 
Language en