Experimental measurements of effective mass in near-surface InAs quantum wells
| Autor: | Zhuo Yang, Javad Shabani, Giti A. Khodaparast, Yoshimitsu Kohama, Christopher J. Stanton, William Mayer, Kaushini Wickramasinghe, Kasra Sardashti, Sunil Thapa, Matthieu C. Dartiailh, Joseph Yuan, Mehdi Hatefipour, Brenden Magill, Yasuhiro H. Matsuda |
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| Rok vydání: | 2020 |
| Předmět: |
Superconductivity
Condensed Matter - Materials Science Mesoscopic physics Materials science Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Cyclotron resonance Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Epitaxy 01 natural sciences Condensed Matter::Materials Science chemistry.chemical_compound Effective mass (solid-state physics) chemistry Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Indium arsenide 010306 general physics 0210 nano-technology Quantum well |
| Zdroj: | Physical Review B. 101 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | 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 $m^{*}$ = 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. |
| Databáze: | OpenAIRE |
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