Effect of anisotropic band curvature on carrier multiplication in graphene

被引：15

作者：

Basko, D. M. ^{[1
]}

机构：

[1] Univ Grenoble 1, CNRS, LPMMC UMR 5493, 25 Rue Martyrs, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 16期

关键词：

FERMI-LIQUID BEHAVIOR; DYNAMICS;

D O I：

10.1103/PhysRevB.87.165437

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study relaxation of an excited electron in the conduction band of intrinsic graphene at zero temperature due to production of interband electron-hole pairs by Coulomb interaction. The electronic band curvature, being anisotropic because of trigonal warping, is shown to suppress relaxation for a range of directions of the initial electron momentum. For other directions, relaxation is allowed only if the curvature exceeds a finite critical value; otherwise, a nondecaying quasiparticle state is found to exist. DOI: 10.1103/PhysRevB.87.165437

引用

页数：9

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