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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4579

Title: Vortex dynamics and frustration in two-dimensional triangular chromium lattices
Authors: HEMMIDA, M
VON NIDDA, HAK
BUTTGEN, N
LOIDL, A
ALEXANDER, LK
NATH, R
MAHAJAN, AV
BERGER, RF
CAVA, RJ
SINGH, Y
JOHNSTON, DC
Keywords: heisenberg-antiferromagnet
magnetic-properties
exchange integrals
phase-transitions
xy-model
licro2
nacro2
order
systems
oxides
Issue Date: 2009
Publisher: AMER PHYSICAL SOC
Citation: PHYSICAL REVIEW B, 80(5), -
Abstract: 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.
URI: 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
ISSN: 1098-0121
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