The Kondo Box: A Magnetic Impurity in an Ultrasmall Metallic Grain
arXiv:cond-mat/9809416 · doi:10.1103/PhysRevLett.82.2143
Abstract
We study the Kondo effect generated by a single magnetic impurity embedded in an ultrasmall metallic grain, to be called a ``Kondo box''. We find that the Kondo resonance is strongly affected when the mean level spacing in the grain becomes larger than the Kondo temperature, in a way that depends on the parity of the number of electrons on the grain. We show that the single-electron tunneling conductance through such a grain features Kondo-induced Fano-type resonances of measurable size, with an anomalous dependence on temperature and level spacing.
4 Latex pages, 4 figures, submitted to Phys. Rev. Lett
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