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Anisotropic superspin at the end of a carbon nanotube

机译:碳纳米管末端的各向异性超旋

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摘要

Interaction-induced magnetism at the ends of carbon nanotubes is studied theoretically, with a special focus on magnetic anisotropies. Spin-orbit coupling, generally weak in ordinary graphene, is strongly enhanced in nanotubes. In combination with Coulomb interactions, this enhanced spin-orbit coupling gives rise to a superspin at the ends of carbon nanotubes with an XY anisotropy on the order of 10 mK. Furthermore, it is shown that this anisotropy can be enhanced by more than one order of magnitude via a partial suppression of the superspin.
机译:从理论上研究了碳纳米管末端的相互作用引起的磁,特别关注磁各向异性。自旋轨道耦合通常在普通石墨烯中较弱,但在纳米管中得到了极大增强。结合库仑相互作用,这种增强的自旋轨道耦合在XY各向异性约为10 mK的碳纳米管末端产生了超自旋。此外,已经表明,通过部分抑制超旋转可以将各向异性提高一个以上的数量级。

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