Experimental Measurements of Effective Mass in Near Surface InAs Quantum Wells

Abstract

Near surface indium arsenide quantum wells have recently attracted a great deal of interest since they can be interfaced epitaxially with superconducting films and have proven to be a robust platform for exploring mesoscopic and topological superconductivity. In this work, we present magnetotransport properties of two-dimensional electron gases confined to an indium arsenide quantum well near the surface. The electron mass extracted from the envelope of the Shubnikov-de Haas oscillations shows an average effective mass $m^{\ast }$ = 0.04 at low magnetic field. Complementary to our magnetotransport study, we employed cyclotron resonance measurements and extracted the electron effective mass in the ultra high magnetic field regime. Our measurements show that the effective mass depends on magnetic field in this regime. The data can be understood by considering a model that includes non-parabolicity of the indium arsenide conduction bands.

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Cited by in corpus (15)

• Effect of Rashba and Dresselhaus spin-orbit coupling on supercurrent rectification and magnetochiral anisotropy of ballistic Josephson junctions
• Superconducting resonators with voltage-controlled frequency and nonlinearity
• Detecting induced $p\pm ip$ pairing at the Al-InAs interface with a quantum microwave circuit
• Epitaxial Superconductor-Semiconductor Two-Dimensional Systems for Superconducting Quantum Circuits
• Progress in superconductor-semiconductor topological Josephson junctions
• Giant $g$-factors and fully spin-polarized states in metamorphic short-period InAsSb/InSb superlattices
• Controlling Fermi level pinning in near-surface InAs quantum wells
• Quasiparticle dynamics in epitaxial Al-InAs planar Josephson junctions
• Mobility exceeding 100,000 cm${}^2$/Vs in modulation-doped shallow InAs quantum wells coupled to epitaxial aluminum
• Near-surface InAs 2DEG on a GaAs substrate: characterization and superconducting proximity effect
• Proximity-induced gapless superconductivity in two-dimensional Rashba semiconductor in magnetic field
• Design of a Josephson diode based on double magnetic impurities
• Magneto-anisotropic weak antilocalization in near-surface quantum wells
• Microwave Andreev bound state spectroscopy in a semiconductor-based Planar Josephson junction
• Bound state-continuum resonance transition in a shallow quantum well