Moiré-induced band-gap opening in one-dimensional superlattices of carbon nanotubes on hexagonal boron nitride
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Moiré-induced band-gap opening in one-dimensional superlattices of carbon nanotubes on hexagonal boron nitride
- 发表刊物：
- Phys. Rev. B
- 摘要：
- Recently, two-dimensional (2D) moiré superlattices have been extensively studied, and many interesting physical phenomena have been observed. However, their one-dimensional (1D) counterpart—1D moiré superlattices—have been rarely explored yet. Here, we performed theoretical calculations of low-energy bands of 1D moiré superlattices of single-walled carbon nanotubes (CNTs) on hexagonal boron nitride (hBN) using a newly developed low-energy effective continuum model for 1D superlattices. We observed moiré-induced opening of small band gaps ranging from a few meV to a few tens of meV, which depends sensitively on the CNT chirality. The observed band-gap opening can be well understood by considering the coupling of electronic states between CNTs and the hBN using the effective continuum model. The results have been confirmed by the density functional theory calculations.
- 合写作者：
- X. L. Zhou, J. X Xie, G. P. Li, J. N. Zhang, M. G. Xia, W. D. Luo*, Z. W. Shi*
- 卷号：
- 105
- 页面范围：
- 115433
- 是否译文：
- 否
- 发表时间：
- 2022-03-30