High frequency resonant experiments in Fe${}_8$ molecular clusters

Abstract

Precise resonant experiments on Fe${}_8$ magnetic clusters have been conducted down to 1.2 K at various tranverse magnetic fields, using a cylindrical resonator cavity with 40 different frequencies between 37 GHz and 110 GHz. All the observed resonances for both single crystal and oriented powder, have been fitted by the eigenstates of the hamiltonian $\mathcal{H}=-D{S}_z^2+E{S}_x^2-g{\mu }_B\mathbf{H}\cdot \mathbf{S}$. We have identified the resonances corresponding to the coherent quantum oscillations for different orientations of spin S = 10.

to appear in Phys.Rev. B (August 2000)

References in corpus (2)

• Thermally Activated Resonant Magnetization Tunneling in Molecular Magnets: Mn_12Ac and others
• Quantum Coherence in Fe8 Molecular Nanomagnets

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