Phys. Rev. B 45, 12612(R) (1992) - Spin stiffness of canted antiferromagnets

Rapid Communication

Spin stiffness of canted antiferromagnets

P. Azaria, B. Delamotte, T. Jolicoeur, and D. Mouhanna

Phys. Rev. B 45, 12612(R) – Published 1 June 1992

Abstract

We use a nonlinear O(3)⊗O(2)/O(2) sigma model to describe the long-distance properties of two-dimensional classical Heisenberg canted antiferromagnets. The two-loop correlation length as well as the spin stiffness tensor are obtained by means of a renormalization-group calculation. Our results are applied to the triangular antiferromagnet. A discussion of possible comparison with Monte Carlo simulations is finally made.

Received 28 January 1992

DOI:https://doi.org/10.1103/PhysRevB.45.12612

©1992 American Physical Society

Authors & Affiliations

Laboratoire de Physique The´orique des Liquides, Universite´ Paris VI, Tour 16, 5eme e´tage, F-75252 Paris CEDEX 5, France

Laboratoire de Physique The´orique et Hautes Energies, Universite´ Paris VI-VII, Tour 24, 5eme e´tage, F-75252 Paris CEDEX 05, France

Service de Physique The´orique, Centre Nucle´aires d’E´tudes de Saclay, F-91191 Gif-sur-Yvette CEDEX, France

Laboratoire de Physique The´orique et Hautes Energies, Universite´ Paris VI-VII, Tour 24, 5eme e´tage, F-75252 Paris CEDEX 05, France

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Issue

Vol. 45, Iss. 21 — 1 June 1992

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