Slave boson theory for transport through magnetic molecules with vibronic states

2007/07/02 by M. D. Nuñez Regueiro, M. D. Núñez Regueiro, Pablo S. Cornaglia +3
Chemistry · Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Boson #Chemistry #Condensed matter physics #Conductance #Coupling (piping) #Electron #Electron transport chain #Hamiltonian (control theory) #Kondo effect #Materials science #Molecular Junctions and Nanostructures #Molecule #Phonon #Physics #Quantum and electron transport phenomena #Quantum mechanics #Slave boson #Superconductivity #Vibronic coupling #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.76.075425

published as Phys. Rev. B 76, 075425 (2007) · 7 pages, 4 figures, to be published in PRB

arxiv created 2007/07/02 · openalex publication_date 2007/08/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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=1, the resulting Kondo Hamiltonian has two active channels. At low temperature, these two channels interfere destructively, leading to a zero conductance.

Citations

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