Abstract
Thin layers of topological insulator materials are quasi-2D systems featuring a complex interplay between quantum confinement and topological band structure. To understand the role of the spatial distribution of carriers in electrical transport, the Josephson effect, magnetotransport, and weak anti-localization are studied in bottom-gated thin Bi2Te3 topological insulator films. The experimental carrier densities are compared to a model based on the solutions of the self-consistent Schrödinger–Poisson equations and they are in excellent agreement. The modeling allows for a quantitative interpretation of the weak antilocalization correction to the conduction and of the critical current of Josephson junctions with weak links made from such films without any ad hoc assumptions.
Original language | English |
---|---|
Article number | 1908351 |
Journal | Advanced materials |
Volume | 32 |
Issue number | 14 |
Early online date | 24 Feb 2020 |
DOIs | |
Publication status | Published - 9 Apr 2020 |
Keywords
- UT-Hybrid-D
- diffusive transport
- Josephson junctions
- superconductivity
- topological insulators
- bismuth telluride