Quantum dynamics of crystals of molecular nanomagnets inside a resonant cavity

TL;DR

This paper demonstrates that placing molecular nanomagnet crystals inside a resonant cavity enhances their magnetic relaxation and induces coherent microwave radiation, suggesting potential for nanomagnetic laser development.

Contribution

It reveals the cavity geometry's influence on magnetic relaxation and microwave emission in molecular nanomagnet crystals, a novel insight into their quantum dynamics.

Findings

Enhanced magnetic relaxation observed inside resonant cavities

Magnetization curves depend on cavity geometry

Potential for nanomagnetic microwave laser development

Abstract

It is shown that crystals of molecular nanomagnets exhibit enhanced magnetic relaxation when placed inside a resonant cavity. Strong dependence of the magnetization curve on the geometry of the cavity has been observed, providing evidence of the coherent microwave radiation by the crystals. A similar dependence has been found for a crystal placed between Fabry-Perot superconducting mirrors. These observations open the possibility of building a nanomagnetic microwave laser pumped by the magnetic field.