Precessing equilibrium and overcritical solitons at a spin-flop transition

TL;DR

This paper investigates the behavior of precessing ball solitons during a spin-flop transition in antiferromagnets, focusing on equilibrium and overcritical states influenced by energy dissipation.

Contribution

It introduces the concept of overcritical precessing ball solitons and analyzes their properties during the spin-flop phase transition.

Findings

Equilibrium precessing solitons can form during the phase transition.

Overcritical PBS can exist outside metastable regions.

Overcritical PBS may originate from disintegration of the initial phase.

Abstract

Taking into account the energy dissipation in the spin-flop phase transition induced by magnetic field in an antiferromagnet with uni-axial anisotropy, the following peculiarities of precessing ball solitons (PBS) are considered: a) the states of equilibrium precessing solitons arising in the initial phase during the phase transition; b) the states of "overcritical PBS" existing outside the region of metastability. The "overcritical" PBS may originate during disintegration of the initial phase.