Decoupling Edge Versus Bulk Conductance in the Trivial Regime of an InAs/GaSb Double Quantum Well Using Corbino Ring Geometry

• Published in: Physical review letters Vol. 117; no. 7; p. 077701
• Main Authors: Nguyen, Binh-Minh, Kiselev, Andrey A, Noah, Ramsey, Yi, Wei, Qu, Fanming, Beukman, Arjan J A, de Vries, Folkert K, van Veen, Jasper, Nadj-Perge, Stevan, Kouwenhoven, Leo P, Kjaergaard, Morten, Suominen, Henri J, Nichele, Fabrizio, Marcus, Charles M, Manfra, Michael J, Sokolich, Marko
• Format: Journal Article
• Language: English
• Published: United States 12.08.2016

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...