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Accessing nanotube bands via crossed electric and magnetic fields

机译:通过交叉的电场和磁场进入纳米管带

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摘要

We investigate the properties of conduction electrons in single-walled armchair carbon nanotubes in the presence of mutually orthogonal electric and magnetic fields transverse to the tube's axis. We find that the fields give rise to an asymmetric dispersion in the right- and left-moving electrons along the tube as well as a band-dependent interaction. We predict that such a nanotube system would exhibit spin-band-charge separation and a band-dependent tunneling density of states. We show that in the quantum dot limit, the fields serve to completely tune the quantum states of electrons added to the nanotube. For each of the predicted effects, we provide examples and estimates that are relevant to experiment.
机译:我们研究横向于管轴的相互正交的电场和磁场中单壁扶手椅碳纳米管中传导电子的性质。我们发现,这些场在沿管的向右和向左移动的电子中产生了不对称的色散,并且产生了依赖于带的相互作用。我们预测,这种纳米管系统将表现出自旋带电荷分离和状态的能带隧穿密度。我们表明,在量子点极限中,这些场可完全调节添加到纳米管中的电子的量子态。对于每种预测的效果,我们提供与实验相关的示例和估计。

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