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Article

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Published version

Publication date

2003

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10883

Microwave absorption and magnetization tunneling in Mn12-acetate molecular clusters

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http://dx.doi.org/10.1103/PhysRevB.67.220402

Abstract

In this paper we study the effect of microwave absorption on the quantum relaxation rate of Mn12 molecular clusters. We have determined first the resonant frequencies of a microwave resonator containing a single crystal of Mn12-Acetate and measured initial isothermal magnetization curves while microwave power was put into the resonator. We have found that the tunneling rate changes one order of magnitude for certain frequencies. This suggests that the microwave shaking of the nuclear spin and molecular vibrational degrees of freedom is responsible for the huge increasing of the tunneling rate.

Subject

Microones, Absorció, Propietats magnètiques, Relaxació magnètica, Efecte túnel

Subject (English)

Microwaves, Absorption, Magnetic properties, Magnetic relaxation, Tunneling (Physics)

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

AMIGO, R., et al. Microwave absorption and magnetization tunneling in Mn12-acetate molecular clusters. Physical Review B. 2003. Vol. 67, num. 22, pags. 220402-1-220402-3. ISSN 0163-1829. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/10883

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