Phys. Rev. B 76, 075425 (2007) [7 pages]Slave boson theory for transport through magnetic molecules with vibronic statesReceived 16 March 2007; revised 2 July 2007; published 20 August 2007 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=1, the resulting Kondo Hamiltonian has two active channels. At low temperature, these two channels interfere destructively, leading to a zero conductance. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.76.075425
DOI:
10.1103/PhysRevB.76.075425
PACS:
72.15.Qm, 73.22.−f
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