Vortex dynamics and frustration in two-dimensional triangular chromium lattices

M. Hemmida; H. A. Krug Von Nidda; N. Büttgen; A. Loidl; L. K. Alexander; R. Nath; A. V. Mahajan; R. F. Berger; R. J. Cava; Yogesh Singh; D. C. Johnston

doi:10.1103/PhysRevB.80.054406

Vortex dynamics and frustration in two-dimensional triangular chromium lattices

M. Hemmida, H. A. Krug Von Nidda, N. Büttgen, A. Loidl, L. K. Alexander, R. Nath, A. V. Mahajan, R. F. Berger, R. J. Cava, Yogesh Singh, D. C. Johnston

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39 Scopus citations

Abstract

The spin dynamics of the two-dimensional (2D) triangular lattice antiferromagnets HCrO2, LiCrO2, and NaCrO2 is investigated by electron spin resonance. In these oxides, on approaching the Néel temperature TN 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.

Original language	English (US)
Article number	054406
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.80.054406
State	Published - Aug 12 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Hemmida, M., Krug Von Nidda, H. A., Büttgen, N., Loidl, A., Alexander, L. K., Nath, R., Mahajan, A. V., Berger, R. F., Cava, R. J., Singh, Y., & Johnston, D. C. (2009). Vortex dynamics and frustration in two-dimensional triangular chromium lattices. Physical Review B - Condensed Matter and Materials Physics, 80(5), Article 054406. https://doi.org/10.1103/PhysRevB.80.054406

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title = "Vortex dynamics and frustration in two-dimensional triangular chromium lattices",

abstract = "The spin dynamics of the two-dimensional (2D) triangular lattice antiferromagnets HCrO2, LiCrO2, and NaCrO2 is investigated by electron spin resonance. In these oxides, on approaching the N{\'e}el temperature TN 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.",

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year = "2009",

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doi = "10.1103/PhysRevB.80.054406",

language = "English (US)",

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AU - Hemmida, M.

AU - Krug Von Nidda, H. A.

AU - Büttgen, N.

AU - Loidl, A.

AU - Alexander, L. K.

AU - Nath, R.

AU - Mahajan, A. V.

AU - Berger, R. F.

AU - Cava, R. J.

AU - Singh, Yogesh

AU - Johnston, D. C.

PY - 2009/8/12

Y1 - 2009/8/12

N2 - The spin dynamics of the two-dimensional (2D) triangular lattice antiferromagnets HCrO2, LiCrO2, and NaCrO2 is investigated by electron spin resonance. In these oxides, on approaching the Néel temperature TN 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.

AB - The spin dynamics of the two-dimensional (2D) triangular lattice antiferromagnets HCrO2, LiCrO2, and NaCrO2 is investigated by electron spin resonance. In these oxides, on approaching the Néel temperature TN 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.

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Vortex dynamics and frustration in two-dimensional triangular chromium lattices

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