Surface magnetic anisotropy at a compensated interface of ferromagnetic antiferromagnetic bilayer

TL;DR

This paper investigates the magnetic anisotropy at a compensated interface in ferromagnetic-antiferromagnetic bilayers, revealing that spin deviations are energetically favorable and decay exponentially away from the interface, with interaction energy depending on the scalar product of magnetic vectors.

Contribution

It introduces a theoretical analysis of surface magnetic anisotropy at compensated interfaces, highlighting the energetic favorability of spin deviations and their decay behavior.

Findings

Spin deviations are energetically favorable near the interface.

Deviations decay exponentially into the bulk.

Interaction energy depends on the square of the scalar product of magnetic vectors.

Abstract

The periodic deviations of ferromagnetic and antiferromagnetic spins from corresponding uniform configurations are shown to be energetically favorable close to a compensated interface of ferromagnetic antiferromagnetic bilayer. The amplitude of the deviations decreases exponentially into the film volumes as a function of a coordinate perpendicular to the interface. The interaction energy is found to be proportional to a square of a scalar product of unit ferromagnetic and antiferromagnetic vectors.