Work

Fokker-Planck approach to thermal fluctuations in antiferromagnetic systems

Year: 2026

Type: article

Abstract: We develop a Fokker-Planck approach to describe the dynamics of staggered magnetization and thermal fluctuations in a two-dimensional antiferromagnetic system with uniaxial anisotropy. Beginning with a classical model for the antiferromagnetic system, we incorporate a Landau-Lifshitz-Gilbert equation augmented by Langevin fields to account for thermal fluctuations, and we derive the Fokker-Planck equation governing the probability distribution function of the spin configuration. Employing the mean-field approximation, we derive the equations of motion for the spin polarization and the two-time spin-spin correlation functions. The methodology is applied to the study of spin-wave dynamics and to the formulation of a phenomenological model for resistance fluctuations in two-dimensional antiferromagnetic semiconductors.

Source: Physical review. B./Physical review. B

DOI: 10.1103/qrcv-bcdn

Authors: E. Martello, G. A. Falci, E. Paladino, F. M. D. Pellegrino

Institutions: University of Catania, Istituto Nazionale di Fisica Nucleare, Sezione di Catania

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Cooperation in Science and Technology, Università di Catania

OpenAlex ID: W4416345455

FWCI:

Cites:

Cited by:

Related to: