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arXiv 2202.02512cond-mat.mes-hallcond-mat.soft
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手征诱导自旋选择性效应--它是什么,它不是什么,以及它为什么重要

The Chiral Induced Spin Selectivity Effect -- What It Is, What It Is Not, And Why It Matters

J. Fransson

摘要:

手性诱导自旋选择性效应是一种激发态现象,可以通过光谱和输运测量来研究。一方面,这样的测量代表平均量,另一方面,几乎所有的理论描述,只有少数例外,都与相关结构的能量相关的属性。虽然这些性质可能与手性诱导的自旋选择性效应相关,也可能不相关,但这些性质中的许多已被认为是该效应的起源或部分起源。在这里,它表明,例如,自旋分辨传输提供很少,如果有的话,关于手性诱导的自旋选择性效应的信息。此外,虽然有效的单电子理论可以在这种情况下使用,原因是为什么这样的描述是不可行的。

英文摘要:

The chiral induced spin selectivity effect is an excited states phenomenon, which can be probed using photo-spectroscopy as well as transport measurements. On the one hand such measurements represent averaged quantities, on the other hand nearly all theoretical descriptions, with only a few exceptions, have been concerned with energy dependent properties of the pertinent structures. While those properties may or may not be relevant for the chiral induced spin selectivity effect, many of those properties have been attributed as being the, or part of the, origins of the effect. Here, it is demonstrated that, for instance, the spin-resolved transmission provides little, if any, information about the chiral induced spin selectivity effect. Moreover, although effective single-electron theory can be used in this context, reasons are given for why such descriptions are not viable.

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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