Non-equilibrium Magnetization Dynamics in the Fe_8 Single-Molecule Magnet Induced by High-Intensity Microwave Radiation

Abstract

Resonant microwave radiation applied to a single crystal of the molecular magnet Fe_8 induces dramatic changes in the sample's magnetization. Transitions between excited states are found even though at the nominal system temperature these levels have negligible population. We find evidence that the sample heats significantly when the resonance condition is met. In addition, heating is observed after a short pulse of intense radiation has been turned off, indicating that the spin system is out of equilibrium with the lattice.

Version to appear in Europhysics Letters. Minor changes and updated references

References in corpus (6)

• Quantum Computing in Molecular Magnets
• Quantum Coherence between High Spin Superposition States of Single Molecule Magnet Ni${}_4$
• Photon-assisted tunneling in a Fe8 Single-Molecule Magnet
• Role of dipolar and exchange interactions in the positions and widths of EPR transitions for the single-molecule magnets Fe8 and Mn12
• Resonant photon absorption in the low spin molecule V15
• Photon-Induced Magnetization Reversal in Single-Molecule Magnets

Cited by in corpus (11)

• Magnetization dynamics in the single-molecule magnet Fe8 under pulsed microwave irradiation
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• Pump-Probe Experiments on the Single-Molecule Magnet Fe8 : Measurement of Excited Level Lifetimes
• Radiation- and Phonon-Bottleneck-Induced Tunneling in the Fe8 Single-Molecule Magnet
• Magnetization and EPR studies of the single molecule magnet Ni${}_4$ with integrated sensors
• Photon-Induced Magnetization Changes in Single-Molecule Magnets
• Energy Level Lifetimes in the Single-Molecule Magnet Fe_8 : Experiments and Simulations
• Electromagnetic radiation emanating from the molecular nanomagnet Fe8
• On-chip Integration of High-Frequency Electron Paramagnetic Resonance Spectroscopy and Hall-Effect Magnetometry
• Measurement of Magnetization Dynamics in Single-Molecule Magnets Induced by Pulsed Millimeter-Wave Radiation
• Direct Spectroscopic Observation of Berry Phase Interference in the Ni${}_4$ Single-Molecule Magnet