Maarten R Wegewijs et al 2007 New J. Phys. 9 344 doi:10.1088/1367-2630/9/9/344
Magneto-transport through single-molecule magnets: Kondo-peaks, zero-bias dips, molecular symmetry and Berry's phase
Focus on Spintronics in Reduced DimensionsMaarten R Wegewijs1,2,4, Christian Romeike1, Herbert Schoeller1 and Walter Hofstetter3
Show affiliationsPart of Focus on Spintronics in Reduced Dimensions
We theoretically analyse coherent electron transport through a single-molecule magnet (SMM) in the regime where charge fluctuations are suppressed. Using the numerical renormalization group (NRG) technique, we calculate the low-temperature conductance as a function of the SMMs magnetic anisotropy parameters and the strength and orientation of an external magnetic field. We show how the microscopic magnetic symmetry of the molecule affects the transport via a Kondo effect with non-trivial dependence on a longitudinal field. In addition, we show how Berry's phase and the Kondo effect, both associated with reversal of the SMMs spin, appear when both the magnetic field amplitude and direction are varied. It is shown that both effects involve the magnetic excitations of the SMM in an essential way.
- PACS
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75.47.-m Magnetotransport phenomena; materials for magnetotransport
75.30.Mb Valence fluctuation, Kondo lattice, and heavy-fermion phenomena
- Subjects
- Dates
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Issue 9 (September 2007)
Received 27 April 2007
Published 28 September 2007
A Corrigendum for this article has been published in 2011 New J. Phys. 13 079501
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Magneto-transport through single-molecule magnets: Kondo-peaks, zero-bias dips, molecular symmetry and Berry's phase
Maarten R Wegewijs et al 2007 New J. Phys. 9 344
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