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arXiv 1604.08548hep-thcond-mat.str-el
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D3-probe-D7膜全息分数拓扑绝缘体

The D3-probe-D7 brane holographic fractional topological insulator

Charlotte Kristjansen, Gordon W. Semenoff

摘要:

D3-探针-D 7膜系统具有2+1维庞加莱对称性,是强关联分数拓扑绝缘体的全息表象,表现出零场量子化的霍尔效应,其电导率为半单位.系统的电荷密度和外部磁场的相图被发现,以及电荷带隙的量子霍尔态,它表现出金属和半金属相有趣的行为。讨论了分数拓扑绝缘体与其它模型的关系。

英文摘要:

The D3-probe-D7 brane system, oriented so as to have 2+1-dimensional Poincare symmetry, is argued to be the holographic representation of a strongly correlated fractional topological insulator which exhibits a zero-field quantized Hall effect with half-units of Hall conductivity. The phase diagram of the system with charge density and external magnetic field is found and, as well as charge gapped quantum Hall states, it exhibits metallic and semi-metallic phases with interesting behaviours. The relationship of this to other models of fractional topological insulators is discussed.

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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