Published April 1, 2008
| public
Journal Article
Unconventional spin order in the triangular lattice system NaCrO_2: A neutron scattering study
Abstract
We report high resolution neutron scattering measurements on the rhombohedrally stacked triangular antiferromagnet NaCrO_2 which has recently been shown to exhibit an unusually broad fluctuating cross-over regime extending far below the onset of spin freezing at T_c. Our results show that at T_c purely two-dimensional quasi-static spin correlations of the 120° type exist. Below some cross-over temperature (T∼0.75T_c) a small incommensuration develops which helps resolve the inter-layer spin frustration and drives short-range three-dimensional magnetic order. This incommensuration assisted dimensional cross-over suggests that inter-layer frustration is responsible for stabilizing the rare 2D correlated phase above 0.75T_c.
Additional Information
© 2007 Elsevier. The authors would like to thank R. Coldea, S. Sondhi and D. Huse for many useful discussions, and Y. Qiu for help with neutron scattering experiments. 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, U.S. Department of Commerce, in providing the neutron research facilities used in this work.Additional details
- Alternative title
- Unconventional spin order in the triangular lattice system NaCrO2: A neutron scattering study
- Eprint ID
- 49767
- Resolver ID
- CaltechAUTHORS:20140917-085305545
- DE-FG-02-05ER46200
- Department of Energy (DOE)
- DMR-0213706
- NSF
- National Institute of Standards and Technology (NIST)
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2014-09-18Created from EPrint's datestamp field
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2021-11-10Created from EPrint's last_modified field