Magnons plane by plane contribution to super-lattice magnetic properties

Abstract

The paper presents a contribution to the study of super-lattice magnetic properties in the linear spin-wave theory framework. The super-lattice is represented by a Heisenberg ferromagnet with N atomic planes. The excitation spectrum and the magnetization are calculated using Green’s functions method. Their expressions are obtained analytically for N=3,5 and 10 atomic planes. The effects of both surface anisotropy and dipolar interaction are studied numerically.