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arXiv · 2407.08168

Berry phases in Coulomb drag of double-layer graphene system

Jianghui Pan·Lijun Zhu·Xiaoqiang Liu·Lin Li·Changgan Zeng·Ji Feng
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Abstract

Recent experiments suggest quantum interference effects in the Coulomb drag of double-layer graphene systems. By accounting for correlated interlayer impurity scattering under a weak magnetic field, our theoretical results reveal drag resistivities resembling those in weak (anti-)localization. It is established that the quantum interference effect is most significant when the chemical potentials match. The theory clarifies the roles of intra- and interlayer Berry phases in Coulomb drag in double-layer graphene systems and helps delineate the intra- and intervalley contributions. These insights are valuable for designing graphene-based electronic devices exploiting quantum effects.

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Jianghui Pan, Lijun Zhu, Xiaoqiang Liu, Lin Li, Changgan Zeng, Ji Feng. 2024-07-11. Berry phases in Coulomb drag of double-layer graphene system. https://arxiv.org/abs/2407.08168

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