Critical behavior of frustrated spin models with noncollinear order
Abstract
We study the critical behavior of frustrated spin models with noncollinear order, including stacked triangular antiferromagnets and helimagnets. For this purpose we compute the field-theoretic expansions at a fixed dimension to six loops and determine their large-order behavior. For the physically relevant cases of two and three components, we show the existence of a stable fixed point that corresponds to the conjectured chiral universality class. This contradicts previous three-loop field-theoretical results but is in agreement with experiments.
- Publication:
-
Physical Review B
- Pub Date:
- April 2001
- DOI:
- 10.1103/PhysRevB.63.140414
- arXiv:
- arXiv:cond-mat/0007389
- Bibcode:
- 2001PhRvB..63n0414P
- Keywords:
-
- 75.10.Hk;
- 05.10.Cc;
- 05.70.Fh;
- 64.60.Fr;
- Classical spin models;
- Renormalization group methods;
- Phase transitions: general studies;
- Equilibrium properties near critical points critical exponents;
- Condensed Matter - Statistical Mechanics;
- High Energy Physics - Lattice;
- High Energy Physics - Theory
- E-Print:
- 4 pages, RevTex