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arXiv 1812.03343cond-mat.mes-hall
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双层石墨烯系统中的位错和节点态

Dislocation and node states in bilayer graphene systems

D. Weckbecker, R. Gupta, F. Rost, S. Sharma, S. Shallcross

摘要:

我们研究了双层石墨烯中具有零化、漂移和相交部分线的部分位错网络的电子结构。我们发现电荷积累状态的偏置,是敏感的费米能量和偏伯格斯矢量,但不螺旋与边缘字符的偏置。这些状态被证明是载流的,与电流密度执行一个螺旋运动沿位错线与强大的层间组件的电流。接近狄拉克点局部化的偏分开关局部化的交叉点,与相应的复杂的电流在节点周围。

英文摘要:

We investigate the electronic structure of realistic partial dislocation networks in bilayer graphene that feature annihilating, wandering, and intersecting partial lines. We find charge accumulation states at partials that are sensitive to Fermi energy and partial Burgers vector but not to the screw versus edge character of the partial. These states are shown to be current carrying, with the current density executing a spiral motion along the dislocation line with a strong interlayer component to the current. Close to the Dirac point localization on partials switches to localization on intersections of partials, with a corresponding complex current flow around the nodes.

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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