Tunable quantum interference in bilayer graphene in double-resonant Raman scattering

被引：4

作者：

Herziger, Felix ^{[1
]}

Tyborski, Christoph ^{[1
]}

Ochedowski, Oliver ^{[2
,3
]}

Schleberger, Marika ^{[2
,3
]}

Maultzsch, Janina ^{[1
,4
]}

机构：

[1] Tech Univ Berlin, Inst Festkorperphys, Hardenbergstr 36, D-10623 Berlin, Germany

[2] Univ Duisburg Essen, Fak Phys, D-47048 Duisburg, Germany

[3] Univ Duisburg Essen, CENIDE, D-47048 Duisburg, Germany

[4] Friedrich Alexander Univ Erlangen Nurnberg, Dept Phys, Staudtstr 7, D-91058 Erlangen, Germany

来源：

CARBON | 2018年 / 133卷

基金：

欧洲研究理事会;

关键词：

DEFECTS; SPECTROSCOPY; SPECTRA;

D O I：

10.1016/j.carbon.2018.03.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The line shape of the double-resonant 2D Raman mode in bilayer graphene is often considered to be characteristic for a certain laser excitation energy. Here, in a joint experimental and theoretical study, we analyze the dependence of the double-resonant Raman scattering processes in bilayer graphene on the electronic broadening parameter gamma. We demonstrate that the ratio between symmetric and anti-symmetric scattering processes sensitively depends on the lifetime of the electronic states, explaining the experimentally observed variation of the complex 2D-mode line shape. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：254 / 259

页数：6

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