Magnetic excitations in triangular lattice NaCrO2

D. Hsieh; D. Qian; R. F. Berger; R. J. Cava; J. W. Lynn; Q. Huang; M. Z. Hasan

doi:10.1016/j.jpcs.2008.06.124

Magnetic excitations in triangular lattice NaCrO₂

D. Hsieh, D. Qian, R. F. Berger, R. J. Cava, J. W. Lynn, Q. Huang, M. Z. Hasan

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

We report the first inelastic neutron scattering measurements on the rhombohedrally stacked triangular antiferromagnet NaCrO₂ which has recently been shown via μSR and NMR measurements to exhibit an unusually broad fluctuating cross-over regime extending far below the onset of spin freezing at T_c. Our results show that strong spin fluctuations persist far below T_c and that dispersive spin wave excitations only appear near the cross-over temperature 0.75 T_c.

Original language	English (US)
Pages (from-to)	3174-3175
Number of pages	2
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	12
DOIs	https://doi.org/10.1016/j.jpcs.2008.06.124
State	Published - Dec 2008

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

Keywords

C. Neutron scattering

Access to Document

10.1016/j.jpcs.2008.06.124

Cite this

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title = "Magnetic excitations in triangular lattice NaCrO2",

abstract = "We report the first inelastic neutron scattering measurements on the rhombohedrally stacked triangular antiferromagnet NaCrO2 which has recently been shown via μSR and NMR measurements to exhibit an unusually broad fluctuating cross-over regime extending far below the onset of spin freezing at Tc. Our results show that strong spin fluctuations persist far below Tc and that dispersive spin wave excitations only appear near the cross-over temperature 0.75 Tc.",

keywords = "C. Neutron scattering",

author = "D. Hsieh and D. Qian and Berger, {R. F.} and Cava, {R. J.} and Lynn, {J. W.} and Q. Huang and Hasan, {M. Z.}",

note = "Funding Information: This work is supported by DOE DE-FG-02-05ER46200. R.J.C. acknowledges partial support through NSF-DMR-0213706, and acknowledges the support of the National Institute of Standards and Technology, US Department of Commerce, in providing the neutron research facilities used in this work.",

year = "2008",

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doi = "10.1016/j.jpcs.2008.06.124",

language = "English (US)",

volume = "69",

pages = "3174--3175",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Magnetic excitations in triangular lattice NaCrO2

AU - Hsieh, D.

AU - Qian, D.

AU - Berger, R. F.

AU - Cava, R. J.

AU - Lynn, J. W.

AU - Huang, Q.

AU - Hasan, M. Z.

N1 - Funding Information: This work is supported by DOE DE-FG-02-05ER46200. R.J.C. acknowledges partial support through NSF-DMR-0213706, and acknowledges the support of the National Institute of Standards and Technology, US Department of Commerce, in providing the neutron research facilities used in this work.

PY - 2008/12

Y1 - 2008/12

N2 - We report the first inelastic neutron scattering measurements on the rhombohedrally stacked triangular antiferromagnet NaCrO2 which has recently been shown via μSR and NMR measurements to exhibit an unusually broad fluctuating cross-over regime extending far below the onset of spin freezing at Tc. Our results show that strong spin fluctuations persist far below Tc and that dispersive spin wave excitations only appear near the cross-over temperature 0.75 Tc.

AB - We report the first inelastic neutron scattering measurements on the rhombohedrally stacked triangular antiferromagnet NaCrO2 which has recently been shown via μSR and NMR measurements to exhibit an unusually broad fluctuating cross-over regime extending far below the onset of spin freezing at Tc. Our results show that strong spin fluctuations persist far below Tc and that dispersive spin wave excitations only appear near the cross-over temperature 0.75 Tc.

KW - C. Neutron scattering

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U2 - 10.1016/j.jpcs.2008.06.124

DO - 10.1016/j.jpcs.2008.06.124

M3 - Article

AN - SCOPUS:57049099891

SN - 0022-3697

VL - 69

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EP - 3175

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

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