Influence of anisotropic dipole matrix element on optical response of AB-stacked graphene superlattice

Chih Wei Chiu, Yuan Cheng Huang, Feng Lin Shyu, Ming Fa Lin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

When the polarization direction of the laser beam Êlies on the graphene plane, the absorption spectrum Aω is isotropic and includes one sharp peak and some shoulders. As for Ê along the stacking direction, Aω is much weaker, and shows only one broadened peak. Because of the dipole matrix element Mcv, the optical excitations do not fully reflect the features of electronic structures [or the joint density of states (JDOS)]. Mcv plays an important role in the relationship between Aω and JDOS. It is strongly dependent on Ê showing an anisotropic property.

Original languageEnglish
Pages (from-to)3136-3138
Number of pages3
JournalOptics Letters
Volume36
Issue number16
DOIs
Publication statusPublished - 2011 Aug 15

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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