Superradiation from Crystals of High-Spin Molecular Nanomagnets

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.

10 pages, 3 figures

References in corpus (4)

• High frequency EPR spectra of a molecular nanomagnet provide a key to understand Quantum Tunneling of the Magnetization
• Quantum Coherence in Fe8 Molecular Nanomagnets
• Superradiance from crystals of molecular nanomagnets
• Tunneling of a large spin via hyperfine interactions

Cited by in corpus (7)

• Photon-assisted tunneling in a Fe8 Single-Molecule Magnet
• Dynamics of molecular nanomagnets in time-dependent external magnetic fields: Beyond the Landau-Zener-Stückelberg model
• Microwave emission from a crystal of molecular magnets -- The role of a resonant cavity
• Absence of spin superradiance in resonatorless magnets
• Collective electromagnetic relaxation in crystals of molecular magnets
• Effects of interatomic interaction on cooperative relaxation of two-level atoms
• Electromagnetic radiation emanating from the molecular nanomagnet Fe8