Spin-boson description of electron transmission through a molecular wire
نویسندگان
چکیده
منابع مشابه
Spin - boson description of electron transmission through a molecular wire q
A spin-boson model based on local pseudo-spins acting in the electronic occupation number space is suggested and used to describe the thermally activated interelectrode current through a molecular wire. Utilizing the density matrix technique a unified description is achieved of all those kinetic processes which contribute to the inelastic current formation. These processes cover a specific supe...
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A theoretical description of electron transmission through a molecular wire embedded in between two leads is carried out using the density matrix method. Accounting for the Coulomb repulsion among the transferred electrons nonlinear kinetic equations for the reduced single-electron distributions are derived. The respective transfer rates contain contributions from different transmission channel...
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The voltage and the temperature behavior of inelastic interelectrode current mediated by a short molecular wire is analyzed within a nonlinear kinetic approach that accounts for strong Coulomb repulsion between transferring electrons. When the coupling to the heat bath occurs via high-frequency vibration modes we predict a generally nonlinear current-voltage characteristics (an Ohmic behavior a...
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The electronic conductance at zero temperature through a quantum wire with side-connected asymmetric quantum ring (as a scatter system) is theoretically studied using the non-interacting Hamiltonian Anderson tunneling method. In this paper we concentrate on the configuration of the quantum dot rings. We show that the asymmetric structure of QD-scatter system strongly influences the amplitude an...
متن کاملEffect of asymmetric quantum dot rings in electron transport through a quantum wire
The electronic conductance at zero temperature through a quantum wire with side-connected asymmetric quantum ring (as a scatter system) is theoretically studied using the non-interacting Hamiltonian Anderson tunneling method. In this paper we concentrate on the configuration of the quantum dot rings. We show that the asymmetric structure of QD-scatter system strongly influences the amplitude an...
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ژورنال
عنوان ژورنال: Chemical Physics
سال: 2004
ISSN: 0301-0104
DOI: 10.1016/j.chemphys.2003.09.021