Coherent radiation by molecular magnets

TL;DR

This paper investigates the potential for molecular magnets to produce coherent radiation, emphasizing the need for coupling to a resonant circuit and developing a microscopic theoretical model including various spin interactions.

Contribution

It introduces a detailed microscopic theory for coherent radiation in molecular magnets, incorporating hyperfine interactions and providing numerical solutions for spin dynamics.

Findings

Coherent radiation requires coupling to a resonant electric circuit.

The developed theory includes Zeeman, anisotropy, and dipole interactions.

Numerical solutions illustrate spin evolution under various conditions.

Abstract

The possibility of coherent radiation by molecular magnets is investigated. It is shown that to realize the coherent radiation, it is necessary to couple the considered sample to a resonant electric circuit. A theory for describing this phenomenon is developed, based on a realistic microscopic Hamiltonian, including the Zeeman terms, single-site anisotropy, and dipole interactions. The role of hyperfine interactions between molecular and nuclear spins is studied. Numerical solutions of the spin evolution equations are presented.