Adding a non-magnetic Cu overlayer on Ni<Subscript>8</Subscript>/Cu(001) is known to induce the reorientation of the magnetic easy axis from in-plane to out-of-plane and to reduce the Curie temperature. In this paper both effects are described on the same footing using an effective Heisenberg trilayer. The model takes...</subscript>

A theoretical model is presented for the study of the scattering of magnons at an extended symmetric atomic well in very thin magnetic films. The thin film consists of three cubic atomic planes with ordered spins coupled by Heisenberg exchange, and the system is supported on a non-magnetic...

We study the one-dimensional isotropic spin-1 Heisenberg magnet with antiferromagnetic nearest-neighbor (nn) and next-nearest-neighbor (nnn) interactions by using the modified spin wave theory (MSWT). The ground state energy and the singlet-triplet energy gap are obtained for several values of...

Theoretical analysis of the layered quasi-periodic Fibonacci structures (superlattices-sequence) is presented for the systems consisting of n<Subscript>A</Subscript> and n<Subscript>B</Subscript> ferromagnetically ordered planes within the layers with S<Subscript>a</Subscript> and S<Subscript>b</Subscript> spins, respectively, while the interfaces are coupled with bilinear and/or...</subscript></subscript></subscript></subscript>