Nonlinear strain effects in double-resonance Raman bands of graphite, graphene, and related materials

被引：94

作者：

del Corro, Elena ^{[1
]}

Taravillo, Mercedes ^{[1
]}

Baonza, Valentin G. ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Ciencias Quim, MALTA Consolider Team, Dept Quim Fis 1, E-28040 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 03期

关键词：

CARBON NANOTUBES; ELASTIC PROPERTIES; SPECTROSCOPY; PRESSURE; COMPRESSION; MONOLAYER; STRENGTH; SPECTRA; STRESS; SENSOR;

D O I：

10.1103/PhysRevB.85.033407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze the influence of biaxial strain on the double-resonance (D and 2D) Raman bands of graphite-related materials. A substantial nonlinear dependence of these bands with the strain is observed, evidencing a quite different effect on the electronic structure around the K and Gamma points of the first Brillouin zone. The strain dependence of the Gruneisen parameters is also analyzed and discussed. We suggest an application of Raman spectroscopy in graphite-related systems, based on the frequency difference observed between the G and D bands (or half the frequency of the 2D features in undefective samples), to provide a measure of the local strain.

引用

页数：5

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