Single-ion versus exchange anisotropy in calculating anisotropic susceptibilities of thin ferromagnetic Heisenberg films within many-body Green's function theory

Abstract

We compare transverse and parallel static susceptibilities of in-plane uniaxial anisotropic ferromagnetic Heisenberg films calculated in the framework of many-body Green's function theory using single-ion anisotropies with the previously investigated case of exchange anisotropies. On the basis of the calculated observables (easy and hard axes magnetizations and susceptibilities) no significant differences are found, i. e. it is not possible to propose an experiment that might decide which kind of anisotropy is acting in an actual ferromagnetic film.

16 pages, 8 figures

References in corpus (6)

• Many-body Green's function theory for the magnetic reorientation of thin ferromagnetic films
• Quantum Monte Carlo simulation of thin magnetic films
• Many-body Green's function theory for thin ferromagnetic anisotropic Heisenberg films: treatment of the exchange anisotropy
• Anisotropic susceptibility of ferromagnetic ultrathin Co films on vicinal Cu
• Many-body Green's function theory for thin ferromagnetic films: exact treatment of the single-ion anisotropy
• Anisotropic susceptibilities of thin ferromagnetic films within many-body Green's function theory

Cited by in corpus (4)

• Anisotropy effects on the magnetic excitations of a ferromagnetic monolayer below and above the Curie temperature
• The treatment of zero eigenvalues of the matrix governing the equations of motion in many-body Green's function theory
• Theoretical Study of Temperature Dependence of Spin Susceptibility in Anisotropic Itinerant Ferromagnets
• Coupled ferro-antiferromagnetic Heisenberg bilayers investigated by many-body Green's function theory