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arXiv 0802.3498cond-mat.mes-hall
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混合价态分子晶体管中自旋的振动检测与控制

Vibrational detection and control of spin in mixed-valence molecular transistors

F. Reckermann, M. Leijnse, M. R. Wegewijs

摘要:

我们调查电子输运通过一个混合价的分子复合物,其中多余的电子可以隧道之间的杂价过渡金属离子,每个具有固定的本地化自旋。我们表明,在这类分子的离子配体壳层的自旋和振动呼吸模式的相互作用,允许总的分子自旋被检测以及控制的非平衡运输。由于自旋相关的赝Jahn-Teller效应,具有不同自旋值的电子跃迁可以通过它们的振动电导侧峰来区分,而不需要使用外部磁场。相反,我们表明,整个分子的自旋状态也可以通过非平衡量子化的分子振动,由于振动诱导的自旋封锁控制。

英文摘要:

We investigate electron transport through a mixed-valence molecular complex in which an excess electron can tunnel between hetero-valent transition metal ions, each having a fixed localized spin. We show that in this class of molecules the interplay of the spins and the vibrational breathing modes of the ionic ligand-shells allows the total molecular spin to be detected as well as controlled by nonequilibrium transport. Due to a spin-dependent pseudo Jahn-Teller effect electronic transitions with different spin values can be distinguished by their vibronic conductance side peaks, without using an external magnetic field. Conversely, we show that the spin state of the entire molecule can also be controlled via the nonequilibrium quantized molecular vibrations due to a vibration-induced spin-blockade.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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