Transport Properties of Near Surface InAs Two-dimensional Heterostructures

Abstract

Two-dimensional electron systems (2DESs) confined to the surface of narrowband semiconductors have attracted great interest since they can easily integrate with superconductivity (or ferromagnetism) enabling new possibilities in hybrid device architectures and study of exotic states in proximity of superconductors. In this work, we study indium arsenide heterostructures where combination of clean interface with superconductivity, high mobility and spin-orbit coupling can be achieved. The weak antilocalization measurements indicate presence of strong spin-orbit coupling at high densities. We study the magnetotransport as a function of top barrier and density and report clear observation of integer quantum Hall states. We report improved electron mobility reaching up to 44,000 cm${}^2$/Vs in undoped heterstructures and well developed integer quantum Hall states starting as low as 2.5~T.

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Cited by in corpus (31)

• InAs-Al Hybrid Devices Passing the Topological Gap Protocol
• Gate Controlled Anomalous Phase Shift in Al/InAs Josephson Junctions
• Phase signature of topological transition in Josephson Junctions
• The multi-terminal Josephson effect
• Missing Shapiro steps in topologically trivial Josephson Junction on InAs quantum well
• Superconducting proximity effect in epitaxial Al-InAs heterostructures
• Tunable magnetic textures in spin valves: From spintronics to Majorana bound states
• Floquet Majorana zero and $\pi$ modes in planar Josephson junctions
• Superconducting Diode Effect Sign Change in Epitaxial Al-InAs Josepshon Junctions
• Link between supercurrent diode and anomalous Josephson effect revealed by gate-controlled interferometry
• Experimental Measurements of Effective Mass in Near Surface InAs Quantum Wells
• Superconducting resonators with voltage-controlled frequency and nonlinearity
• Tuning supercurrent in Josephson field effect transistors using h-BN dielectric
• Epitaxial Superconductor-Semiconductor Two-Dimensional Systems for Superconducting Quantum Circuits
• Voltage-tunable superconducting resonators: a platform for random access quantum memory
• Progress in superconductor-semiconductor topological Josephson junctions
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• Near-surface InAs 2DEG on a GaAs substrate: characterization and superconducting proximity effect
• InAs on Insulator: A New Platform for Cryogenic Hybrid Superconducting Electronics
• Magneto-anisotropic weak antilocalization in near-surface quantum wells
• Microwave Andreev bound state spectroscopy in a semiconductor-based Planar Josephson junction
• Investigation of InAs based devices for topological applications
• Solid-State Reactions at Niobium-Germanium Interfaces in Hybrid Superconductor-Semiconductor Devices
• Bound state-continuum resonance transition in a shallow quantum well
• High transparency induced superconductivity in field effect two-dimensional electron gases in undoped InAs/AlGaSb surface quantum wells
• Local Control of Supercurrent Density in Epitaxial Planar Josephson Junctions