Magnetic quantization in graphene-related systems

Abstract

In this thesis we develop a generalized tight-binding model to study the magnetic quantization in graphene-related systems ranging from one-dimension curved graphene nanoribbons and carbon nanotubes to two-dimension multilayer graphenes with different stacking configurations All of the systems are built from graphene sheets and the essential properties are diversified by the curvature edge and stacking without the modifications on the graphene honeycomb structures In multilayer graphene systems the stacking configuration along the perpendicular direction determines the unique Landau level spectra and leads Landau levels to anti-cross only in certain configurations In curved graphene nanoribbons and carbon nanotubes the main electronic properties result from the cooperative or competitive relationships between the geometric structure and a magnetic field The depressed LLs due to the quantum confinement lead to the peculiar optical selection rules which change with the curvature boundary and magnetic field We have paid attention to compare the calculations with the experiments and have obtained some novel features not yet verified experimentally This study is served as a fundamental base to the further researches on the important properties of the graphene-related systems

Date of Award	2014 Aug 1
Original language	English
Supervisor	Min-Fa Lin (Supervisor)