Yaacov Shapira | Searcharxiv

arXiv2006

Magnetization steps and cluster-type statistics for a diluted Heisenberg antiferromagnet on the square lattice: Models with two exchange constants

The paper presents theoretical results on the magnetization of a diluted Heisenberg antiferromagnet on the square lattice for models with two exchange constants (J1-J2 and J1-J3). Cluster with up to five spins (5/2) are considered.

cond-mat.stat-mech↗

arXiv2006

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

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.

cond-mat.stat-mech↗