Title

Berry-Phase Oscillations Of The Kondo Effect In Single-Molecule Magnets

Abstract

We show that it is possible to topologically induce or quench the Kondo resonance in the conductance of a single-molecule magnet (S>1/2) strongly coupled to metallic leads. This can be achieved by applying a magnetic field perpendicular to the molecule easy axis and works for both full- and half-integer spin cases. The effect is caused by the Berry-phase interference between two quantum tunneling paths of the molecule's spin. We have calculated the renormalized Berry-phase oscillations of the Kondo peaks as a function of the transverse magnetic field as well as the conductance of the molecule by means of the poor man's scaling method. We propose to use a new variety of the single-molecule magnet Ni4 for the experimental observation of this phenomenon. © 2006 The American Physical Society.

Publication Date

9-26-2006

Publication Title

Physical Review Letters

Volume

97

Issue

12

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevLett.97.126601

Socpus ID

33748849668 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33748849668

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