Rich magneto-absorption spectra of AAB-stacked trilayer graphene

Thi Nga Do, Po Hsin Shih, Cheng Peng Chang, Chiun Yan Lin, Ming Fa Lin

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A generalized tight-binding model is developed to investigate the feature-rich magneto-optical properties of AAB-stacked trilayer graphene. Three intragroup and six intergroup inter-Landau-level (inter-LL) optical excitations largely enrich magneto-absorption peaks. In general, the former are much higher than the latter, depending on the phases and amplitudes of LL wavefunctions. The absorption spectra exhibit single- or twin-peak structures which are determined by quantum modes, LL energy spectra and Fermion distribution. The splitting LLs, with different localization centers (2/6 and 4/6 positions in a unit cell), can generate very distinct absorption spectra. There exist extra single peaks because of LL anti-crossings. AAB, AAA, ABA, and ABC stackings considerably differ from one another in terms of the inter-LL category, frequency, intensity, and structure of absorption peaks. The main characteristics of LL wavefunctions and energy spectra and the Fermi-Dirac function are responsible for the configuration-enriched magneto-optical spectra.

Original languageEnglish
Pages (from-to)17597-17605
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume18
Issue number26
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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