Exciton effects in strained armchair graphene nanoribbons

被引：3

作者：

Jia, Yonglei ^{[1
]}

Liu, Junlin ^{[1
]}

机构：

[1] Xinyang Normal Univ, Coll Phys & Elect Engn, Xinyang 464000, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2016年 / 30卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Graphene nanoribbons; exciton effects; uniaxial strain; tight-binding model; ELECTRONIC-STRUCTURE; CARBON NANOTUBES;

D O I：

10.1142/S0217979216500211

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The exciton effects in 1-nm-wide armchair graphene nanoribbons (AGNRs) under the uniaxial strain were studied within the nonorthogonal tight-binding (TB) model, supplemented by the long-range Coulomb interactions. The obtained results show that both the excitation energy and exciton binding energy are modulated by the uniaxial strain. The variation of these energies depends on the ribbon family. In addition, the results show that the variation of the exciton binding energy is much weaker than the variation of excitation energy. Our results provide new guidance for the design of optomechanical systems based on graphene nanoribbons.

引用

页数：8

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