title: Decoupling Edge Versus Bulk Conductance in the Trivial Regime of an InAs/GaSb Double Quantum Well Using Corbino Ring Geometry.
abstract: 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.
authors: HRL Laboratories, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
authors: Binh-Minh
authors: BM
authors: Nguyen
authors: HRL Laboratories, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
authors: Andrey A
authors: AA
authors: Kiselev
authors: HRL Laboratories, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
authors: Ramsey
authors: R
authors: Noah
authors: HRL Laboratories, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
authors: Wei
authors: W
authors: Yi
authors: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors: Fanming
authors: F
authors: Qu
authors: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors: Arjan J A
authors: AJ
authors: Beukman
authors: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors: Folkert K
authors: FK
authors: de Vries
authors: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors: Jasper
authors: J
authors: van Veen
authors: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors: Stevan
authors: S
authors: Nadj-Perge
authors: QuTech and Kavli Institute of Nanoscience, Delft University of Technology, 2600 GA Delft, The Netherlands.
authors: Leo P
authors: LP
authors: Kouwenhoven
authors: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.
authors: Morten
authors: M
authors: Kjaergaard
authors: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.
authors: Henri J
authors: HJ
authors: Suominen
authors: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.
authors: Fabrizio
authors: F
authors: Nichele
authors: Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark.
authors: Charles M
authors: CM
authors: Marcus
authors: Department of Physics and Astronomy, and Station Q Purdue, Purdue University, West Lafayette, Indiana 47907, USA.
authors: Michael J
authors: MJ
authors: Manfra
authors: HRL Laboratories, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
authors: Marko
authors: M
authors: Sokolich