Quantum Monte Carlo study on electron-phonon coupling in monolayer graphene

被引：2
|
作者：
Ji, Kai [1 ]
Iwano, Kaoru [1 ]
Nasu, Keiichiro [1 ]
机构：
[1] Grad Univ Adv Studies, KEK, Inst Mat Struct Sci, Solid State Theory Div, Tsukuba, Ibaraki 3050801, Japan
来源：
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 2010年 / 181卷 / 2-3期
关键词：
Angle-resolved photoemission spectroscopy; Electron-phonon interaction; Graphite; Monte Carlo simulation; LATTICE DISTORTION;
D O I：
10.1016/j.elspec.2010.06.002
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
In connection with recent experiments of angle-resolved photoemission spectroscopy (ARPES) on graphite, we theoretically study the interaction between electrons and in-plane optical phonons in monolayer graphene by a constrained quantum Monte Carlo simulation. At K point of Brillouin zone, a well-defined sharp quasiparticle (QP) peak is observed in the ARPES of undoped graphene, but this peak exists only in a small electron-phonon (e-ph) coupling regime. It is shown the QP dynamics is closely related to the electronic states, e-ph coupling, and doping level. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：189 / 192
页数：4
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