Aharonov-Bohm oscillations and electron gas transitions in hexagonal core-shell nanowires with an axial magnetic field
arXiv:1501.06694 · doi:10.1103/PhysRevB.91.115440
Abstract
We use spin-density-functional theory within an envelope function approach to calculate electronic states in a GaAs/InAs core-shell nanowire pierced by an axial magnetic field. Our fully 3D quantum modeling includes explicitly the description of the realistic cross-section and composition of the sample, and the electrostatic field induced by external gates in two different device geometries, gate-all-around and back-gate. At low magnetic fields, we investigate Aharonov-Bohm oscillations and signatures therein of the discrete symmetry of the electronic system, and we critically analyze recent magnetoconductance observations. At high magnetic fields we find that several charge and spin transitions occur. We discuss the origin of these transitions in terms of different localization and Coulomb regimes and predict their signatures in magnetoconductance experiments.
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Cited by in corpus (12)
- Tuning Rashba spin-orbit coupling in homogeneous semiconductor nanowires
- Electron localization and optical absorption of polygonal quantum rings
- Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect
- Conductance features of core-shell nanowires determined by the internal geometry
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- Coulomb Blockade from the Shell of an InP-InAs Core-Shell Nanowire with a Triangular Cross Section
- Exciton dynamics in GaAs/(Al,Ga)As core-shell nanowires with shell quantum dots
- In-gap corner states in core-shell polygonal quantum rings
- Band structure of n- and p-doped core-shell nanowires
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- Tailoring the core electron density in modulation-doped Core-Multi-Shell nanowires