title: Critical Binder cumulant in a two-dimensional anisotropic Ising model with competing interactions.
abstract: The Binder cumulant at the phase transition of Ising models on square lattices with ferromagnetic couplings between nearest neighbors and with competing antiferromagnetic couplings between next-nearest neighbors, along only one diagonal, is determined using Monte Carlo techniques. In the phase diagram a disorder line occurs separating regions with monotonically decaying and with oscillatory spin-spin correlations. Findings on the variation of the critical cumulant with the ratio of the two interaction strengths are compared to related recent results based on renormalization-group calculations.
authors.affiliation: JARA-SIM, Institut für Theoretische Physik, RWTH Aachen, 52056 Aachen, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Selke
authors.forename: L N
authors.initials: LN
authors.lastname: Shchur