Specific-heat critical behavior of CsMnBr3 and holmium: Two tests of chiral universality
Abstract
Specific-heat (Cp) measurements have been made near the H=0 phase transition in CsMnBr3, an XY stacked triangular antiferromagnet, and Ho, a helical antiferromagnet. Previous neutron-scattering experiments indicate both to be prime candidates for chiral universality. Cp vs T data for CsMnBr3 yield α=0.39+/-0.09, in agreement with Monte Carlo results; however, data for Ho show quite a different behavior.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1991
- DOI:
- 10.1103/PhysRevLett.66.3195
- Bibcode:
- 1991PhRvL..66.3195W
- Keywords:
-
- 75.40.Cx;
- 64.60.Kw;
- 75.50.Ee;
- Static properties;
- Multicritical points;
- Antiferromagnetics