7Li NMR Studies of LiCrO2

Y. Itoh

doi:10.7566/JPSCP.3.014006

7Li NMR Studies of LiCrO2

Strongly Correlated Electrons 2014-08-01 v1

Authors: Y. Itoh

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Abstract

We report on 7Li NMR studies of a spin S = 3/2 triangular lattice antiferromagnet LiCrO2 (Neel temperature TN = 62 K) in the paramagnetic state by using the free-induction decay of 7Li nuclear magnetization. We observed critical divergence of the 7Li nuclear spin-lattice relaxation rate 1/T1 near TN, a narrow critical region, and a critical exponent w = 0.45 from a fit of 1/T1 $\propto$ (T/TN - 1) $^{-w}$ . Although spin frustration effects have been explored for this system, the dynamical critical phenomena suggest that LiCrO2 in the critical region is a poor low dimensional antiferromagnetic system.

Keywords

7li nmr licro2 triangular lattice antiferromagnet spin frustration critical exponent spin-lattice relaxation rate

Cite

@article{arxiv.1310.4119,
  title  = {7Li NMR Studies of LiCrO2},
  author = {Y. Itoh},
  journal= {arXiv preprint arXiv:1310.4119},
  year   = {2014}
}

Comments

6 pages, 4 figures, to appear in JPS Conf. Proc. (SCES2013)

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