Critical behavior of frustrated spin models with noncollinear order

被引：89

作者：

Pelissetto, A ^{[1
]}

Rossi, P

Vicari, E

机构：

[1] Univ Rome 1, Dipartimento Fis, I-00185 Rome, Italy

[2] Ist Nazl Fis Nucl, I-00185 Rome, Italy

[3] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy

[4] Ist Nazl Fis Nucl, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.63.140414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

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