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Landau quantization of Dirac fermions in graphene and its multilayers
- Source :
- Frontiers of Physics. 12
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- When electrons are confined in a two-dimensional (2D) system, typical quantum–mechanical phenomena such as Landau quantization can be detected. Graphene systems, including the single atomic layer and few-layer stacked crystals, are ideal 2D materials for studying a variety of quantum–mechanical problems. In this article, we review the experimental progress in the unusual Landau quantized behaviors of Dirac fermions in monolayer and multilayer graphene by using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). Through STS measurement of the strong magnetic fields, distinct Landau-level spectra and rich level-splitting phenomena are observed in different graphene layers. These unique properties provide an effective method for identifying the number of layers, as well as the stacking orders, and investigating the fundamentally physical phenomena of graphene. Moreover, in the presence of a strain and charged defects, the Landau quantization of graphene can be significantly modified, leading to unusual spectroscopic and electronic properties.
- Subjects :
- Physics
Physics and Astronomy (miscellaneous)
Condensed matter physics
Graphene
Scanning tunneling spectroscopy
02 engineering and technology
Electron
Landau quantization
021001 nanoscience & nanotechnology
01 natural sciences
law.invention
symbols.namesake
Dirac fermion
law
0103 physical sciences
Monolayer
symbols
Scanning tunneling microscope
010306 general physics
0210 nano-technology
Graphene nanoribbons
Subjects
Details
- ISSN :
- 20950470 and 20950462
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Frontiers of Physics
- Accession number :
- edsair.doi.dedup.....df50f5331c0210a83382f8866f32f0a2