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arXiv 1909.01545cond-mat.mes-hallcond-mat.str-el
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扭曲双层石墨烯的一般连续介质模型及任意光滑变形

General continuum model for twisted bilayer graphene and arbitrary smooth deformations

Leon Balents

摘要:

我们提出了一个简单的推导出一个连续的哈密顿双层石墨烯与任意光滑的晶格变形-技术上的方式参数化位移场具有小梯度。我们发现,这包含了Bistritzer和Macdonald扭曲双层石墨烯的连续模型以及它的许多推广和扩展。推导完全在实空间中进行。

英文摘要:

We present a simple derivation of a continuum Hamiltonian for bilayer graphene with an arbitrary smooth lattice deformation -- technically in a fashion parametrized by displacement fields with small gradients. We show that this subsumes the continuum model of Bistritzer and Macdonald for twisted bilayer grapheneas well as many generalizations and extensions of it. The derivation is carried out entirely in real space.

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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