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Nonequilibrium resonant spectroscopy of molecular vibrons

机译:分子振动子的非平衡共振光谱

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Quantum transport through single molecules is essentially affected by molecular vibrations. We investigate the behavior of the prototype single-level model with weak to intermediate electron-vibron interactions and arbitrary couplings to the leads. For this, we have developed a nonequilibrium self-consistent theory which allows us to explore the nonperturbative regime via the nonequilibrium Green function formalism. We show that the nonequilibrium resonant spectroscopy is able to determine the energies of molecular orbitals and the spectrum of molecular vibrations. Our results are relevant to scanning tunneling spectroscopy experiments and demonstrate the importance of the systematic and self-consistent investigation of the effects of the vibronic dynamics onto the transport through single molecules.
机译:通过单分子的量子传输基本上受分子振动的影响。我们调查了具有弱到中间的电子-Vibr相互作用和对引线的任意耦合的原型单能级模型的行为。为此,我们开发了一种非平衡自洽理论,该理论使我们能够通过非平衡格林函数形式主义来探索非摄动状态。我们表明,非平衡共振光谱能够确定分子轨道的能量和分子振动的频谱。我们的研究结果与扫描隧道光谱实验有关,并证明了系统和自洽研究电子振动动力学对单分子传输的影响的重要性。

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