Destruction of Landau levels in asymmetric bilayer nanographene ribbons

M. H. Lee, H. C. Chung, C. Y. Lin, M. F. Lin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Magneto-electronic properties of asymmetric bilayer nanographene ribbons are enriched by geometric structures, interlayer atomic interactions, magnetic quantization and finite-size confinement. There are drastic changes on the band symmetry, the degeneracy of the partial flat bands, the number of band-edge states, the energy dispersion, the carrier density, and the spatial symmetry of the wave function. Quasi-Landau levels might be converted into oscillating bands where extra band-edge states are created. When the upper ribbon is located at the ribbon centre, the Landau wave functions are completely destroyed. Meanwhile, a charge transfer between different layers or different sublattices in the same layer occurs. Furthermore, the density of states, reflecting the band structure, is also severely altered in terms of the number, structure, energy, and height of the prominent peaks.

Original languageEnglish
Pages (from-to)2812-2825
Number of pages14
JournalPhilosophical Magazine
Volume94
Issue number24
DOIs
Publication statusPublished - 2014 Aug 23

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Destruction of Landau levels in asymmetric bilayer nanographene ribbons'. Together they form a unique fingerprint.

Cite this