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arXiv · 0707.0242

Slave boson theory for transport through magnetic molecules with vibronic states

M. D. Nuñez Regueiro·P. S. Cornaglia·Gonzalo Usaj·C. A. Balseiro
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Abstract

We study the electron transport through a magnetic molecular transistor in the Kondo limit using the slave boson technique. We include the electron-phonon coupling and analyze the cases where the spin of the molecule is either S=1/2 or S=1. We use the Schrieffer-Wolff transformation to write down a low energy Hamiltonian for the system. In the presence of electron-phonon coupling, and for $S\smeq1$, the resulting Kondo Hamiltonian has two active channels. At low temperature, these two channels interfere destructively, leading to a zero conductance.

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M. D. Nuñez Regueiro, P. S. Cornaglia, Gonzalo Usaj, C. A. Balseiro. 2007-07-02. Slave boson theory for transport through magnetic molecules with vibronic states. https://doi.org/10.1103/physrevb.76.075425

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