Exchange-bond structure and magnetization-step spectra of a diluted Heisenberg antiferromagnet on the square lattice: Lopsided two-exchange models

2006/09/27 by Yaacov Shapira, Shapira, Yaacov, V. Bindilatti +2
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.48550/arxiv.cond-mat/0609715

18 pages, 13 figures; references updated

arxiv created 2006/09/28 · arxiv updated 2009/12/01

Abstract

Theoretycal results on the magnetization and susceptibility of a Heisenberg diluted antiferromagnet in the square lattice are given. The models considered have two exchange constants (J1-J2 and J1-J3) of which the second is much smaller than the first (lopsided models). Cluster statistics for clusters with up to 5 spins is given. A procedure to account for the contribution to the magnetization of clusters with more than 5 spins is described.

Related

• Magnetization steps and cluster-type statistics for a diluted Heisenberg antiferromagnet on the square lattice: Models with two exchange constants
• Frustrating antiferromagnetic exchange interactions enhance specific valence-bond-pair motifs
• Cluster mean-field theory study of J₁-J₂ Heisenberg model on a square lattice
• Finite temperature properties of alternating ferro-antiferromagnetic\n Heisenberg chains
• Exchange anisotropy, disorder and frustration in diluted, predominantly ferromagnetic, Heisenberg spin systems