Статья

Experimental measurements of effective mass in near-surface InAs quantum wells

Joseph YuanDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USAMehdi HatefipourDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USABrenden A. MagillDepartment of Physics, Virginia Tech, Blacksburg, Virginia 24061, USAWilliam MayerDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USAMatthieu DartiailhDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USAKasra SardashtiDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USAKaushini S. WickramasingheDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USAGiti A. KhodaparastDepartment of Physics, Virginia Tech, Blacksburg, Virginia 24061, USAYasuhiro H. MatsudaInstitute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, JapanYoshimitsu KohamaInstitute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, JapanZhuo YangInstitute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, JapanSunil ThapaDepartment of Physics, University of Florida, Gainesville, Florida 32611, USAChristopher J. StantonDepartment of Physics, University of Florida, Gainesville, Florida 32611, USAJavad ShabaniDepartment of Physics, Center for Quantum Phenomena, New York University, New York 10003, USA

2020en

ABI

Аннотация

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 paper, 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 ${m}^{*}=0.04$ at a low magnetic field. Complementary to our magnetotransport study, we employed cyclotron resonance measurements and extracted the electron effective mass in the ultrahigh magnetic-field regime. Both regimes can be understood by considering a model that includes nonparabolicity of the indium arsenide conduction bands.

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Идентификаторы

DOI: 10.1103/physrevb.101.205310

Цитирования и источники

Цитирований: 3Использованных источников: 0

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