Superradiation from Crystals of High-Spin Molecular Nanomagnets

TL;DR

This paper develops a phenomenological theory explaining how superradiation occurs in crystals of high-spin molecular nanomagnets, highlighting the effects of magnetic anisotropy, external fields, and dipole interactions.

Contribution

It introduces a new theoretical framework for superradiation in high-spin nanomagnet crystals, considering multiple physical factors affecting magnetization regimes.

Findings

Radiation friction can induce superradiation pulses.

Magnetization can switch rapidly under certain conditions.

Different regimes of magnetization depend on temperature and interactions.

Abstract

Phenomenological theory of superradiation from crystals of high-spin molecules is suggested. We show that radiation friction can cause a superradiation pulse and investigate the role of magnetic anisotropy, external magnetic field and dipole-dipole interactions. Depending on the contribution of all these factors at low temperature, several regimes of magnetization of crystal sample are described. Very fast switch of magnetization's direction for some sets of parameters is predicted.