Abstract
We report magnetization, specific heat, muon spin rotation, and Na NMR measurements on the S=3/2 rhombohedrally stacked Heisenberg antiferromagnet NaCrO2. This compound appears to be a good candidate for the study of isotropic triangular Heisenberg antiferromagnets with very weak interlayer coupling. While specific heat and magnetization measurements indicate the onset of a transition in the range Tc∼40-50K, both muon spin rotation and NMR reveal a fluctuating crossover regime extending well below Tc, with a peak of relaxation rate T1-1 around T 25K. This novel finding is discussed within the context of excitations in the triangular Heisenberg antiferromagnets.
Original language | English (US) |
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Article number | 167203 |
Journal | Physical review letters |
Volume | 97 |
Issue number | 16 |
DOIs | |
State | Published - 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy