Self-focusing magnetostatic beams in thin magnetic films

TL;DR

This paper explores the theoretical conditions under which stable self-focusing magnetostatic beams can form in thin magnetic films, providing specific parameters for experimental observation.

Contribution

It demonstrates that stable self-focusing beams can exist in thin magnetic films under certain magnetic field orientations, reducing the problem to a one-dimensional nonlinear Schrödinger equation.

Findings

Stable self-focusing beams are theoretically possible in thin magnetic films.

Specific beam widths and angles depend on the magnetizing field strength.

Conditions for experimental observation are proposed.

Abstract

The possibility of generation of stable self-focusing beams in in-plane magnetized thin magnetic films is considered and theoretical conditions for the existence of such localized solutions are discussed. It is shown that for the definite direction between static magnetizing field and preferential direction of radiation from microwave antenna the problem reduces to the one-dimensional nonlinear Schroedinger equation. For such angles it is possible to generate stable self-focusing beams. Particular values of beam width and propagation angles versus magnitude of magnetizing field are calculated in order to suggest the realistic experimental setup for the observation of discovered effect.