| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1546094 | Physica E: Low-dimensional Systems and Nanostructures | 2012 | 6 Pages |
Abstract
Energy gap and wave function in thin films of topological insulator is studied, based on tight-binding model. It is revealed that thickness dependence of the magnitude of energy gap is composed of damping and oscillation. The damped behavior originates from the presence of gapless surface Dirac cone in the infinite thickness limit. On the other hand, the oscillatory behavior stems from electronic properties in the thin thickness limit.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Kazuto Ebihara, Keiji Yada, Ai Yamakage, Yukio Tanaka,