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Incoherent Zener tunneling and its application to molecular magnets

Leuenberger, M. N. and Loss, D.. (2000) Incoherent Zener tunneling and its application to molecular magnets. Physical Review B, Vol. 61, H. 18. pp. 12200-12203.

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Official URL: http://edoc.unibas.ch/dok/A5254747

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Abstract

We generalize the Landau-Zener theory of coherent tunneling transitions by taking thermal relaxation into account. The evaluation of a generalized master equation containing a dynamic tunneling rate that includes the interaction between the relevant system and its environment leads to an incoherent Zener transition probability with an exponent that is twice as large as the one of the coherent Zener probability in the limit T-<0. We apply our results to molecular clusters, in particular to recent measurements of the tunneling transition of spins in Fe-8 crystals performed by Wernsdorfer and Sessoli [Science 284, 133 (1999)].
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0163-1829
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:48

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