Long-range adsorbate interactions mediated by two-dimensional Dirac fermions
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Published:2022-12-27
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ISSN:1674-1056
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Container-title:Chinese Physics B
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language:
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Short-container-title:Chinese Phys. B
Author:
Wang Xiaohui,Fu Zhen-Guo,Wang Zhigang,Chi Feng,Ping Zhang
Abstract
Abstract
We provide here an analytical formalism to describe the indirect interaction between adsorbed atom or molecule pairs mediated by two-dimensional (2D) Dirac fermions. We show that in contrast to the case of traditional 2D electron gas, in the 2D Dirac system, the long-rang interaction behaves as 1/r
3 decaying Friedel oscillation. This analytical formalism is fully consistent with a tight-binding numerical calculation of honeycomb lattices. Our formalism is suitable for the realistic 2D Dirac materials, such as graphene and surface states of three-dimensional topological insulators.
Subject
General Physics and Astronomy