科研之友
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摘要
Graphene-based nanostructures exhibit flat electronic energy bands in their single-particle spectrum. We consider interacting electrons in flat bands of zigzag nanoribbons. We present a protocol for flat-band projection that yields interaction-only tight-binding models. We argue that, at low densities, flat bands can delocalize single-particle basis states to support ferromagnetic quantum crystal ground states.
- 出版日期2012-2-29
- 单位Virginia Tech; 美国弗吉尼亚理工大学(Virginia Tech)
