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Macroscopic Quantum Coherence in Magnetic Molecular Clusters |
| JIN Yan-Hong1,2;NIE Yi-Hang2;LIANG Jiu-Qing2;PU Fu-Cho1 |
| 1Institute of Physics and Center for Condensed Matter
Physics, Chinese Academy of Sciences, Beijing 100080
2Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006
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| Cite this article: |
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JIN Yan-Hong, NIE Yi-Hang, LIANG Jiu-Qing et al 2001 Chin. Phys. Lett. 18 687-689 |
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Abstract The oscillation of tunnel splitting in Fe8 molecular clusters is obtained as a function of magnetic field applied along the hard axis by means of instanton method with both semiclassical treatment and the effective potential field description of quantum spin system. The theoretical splittings of the instanton method are compared with the numerical result by diagonalization of spin Hamilton operator and experimental observations. By taking the appropriate parameters, our theory formula yields the result as the same as the experimental observation.
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| Keywords:
75.45.+j
75.30.Gw
03.65.Sq
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Published: 01 May 2001
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| PACS: |
75.45.+j
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(Macroscopic quantum phenomena in magnetic systems)
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75.30.Gw
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(Magnetic anisotropy)
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03.65.Sq
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(Semiclassical theories and applications)
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