Decoupling Edge Versus Bulk Conductance in the Trivial Regime of anInAs/GaSbDouble Quantum Well Using Corbino Ring Geometry
| Autor: | Binh-Minh Nguyen, Henri J. Suominen, Fanming Qu, Charles Marcus, Fabrizio Nichele, Morten Kjaergaard, Ramsey Noah, Stevan Nadj-Perge, Andrey A. Kiselev, Michael J. Manfra, Arjan J. A. Beukman, Marko Sokolich, Leo P. Kouwenhoven, Wei Yi, Jasper van Veen, Folkert K. de Vries |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Condensed matter physics General Physics and Astronomy Conductance 02 engineering and technology Decoupling (cosmology) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 01 natural sciences law.invention law Electrical resistivity and conductivity 0103 physical sciences Resistor Conductance quantum Ring geometry 010306 general physics 0210 nano-technology Quantum well Network model |
| Zdroj: | Physical Review Letters. 117 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | A Corbino ring geometry is utilized to analyze edge and bulk conductance of InAs/GaSb quantum well structures. We show that edge conductance exists in the trivial regime of this theoretically predicted topological system with a temperature-insensitive linear resistivity per unit length in the range of 2 kΩ/μm. A resistor network model of the device is developed to decouple the edge conductance from the bulk conductance, providing a quantitative technique to further investigate the nature of this trivial edge conductance, conclusively identified here as being of n type. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|