Interplay between one-dimensional confinement and crystallographic anisotropy in ballistic hole quantum wires

Abstract

We study the Zeeman splitting in induced ballistic 1D quantum wires aligned along the [233] and [011] axes of a high mobility (311)A undoped heterostructure. Our data shows that the g-factor anisotropy for magnetic fields applied along the high symmetry [011] direction can be explained by the 1D confinement only. However when the magnetic field is along [233] there is an interplay between the 1D confinement and 2D crystal anisotropy. This is highlighted for the [233] wire by an unusual non-monotonic behavior of the g-factor as the wire is made narrower.

References in corpus (12)

• Possible Spin Polarization in a One-Dimensional Electron Gas
• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Highly anisotropic g-factor of two-dimensional hole systems
• Zeeman splitting in ballistic hole quantum wires
• Anisotropic magnetoresistance of GaAs two-dimensional holes
• Ballistic transport in induced one-dimensional hole systems
• Spin-dependent transport in a quasiballistic quantum wire
• Anomalous Spin Polarization of GaAs Two-Dimensional Hole Systems
• Conductance quantization and the 0.7x2e2/h conductance anomaly in one-dimensional hole systems
• Large variations in the hole spin splitting of quantum-wire subband edges
• Anisotropic modification of the effective hole $g$-factor by electrostatic confinement
• Electronic and spin properties of hole point contacts

Cited by in corpus (14)

• Observation of a One-Dimensional Spin-Orbit Gap in a Quantum Wire
• What lurks below the last plateau: Experimental studies of the 0.7 x 2e^2/h conductance anomaly in one-dimensional systems
• Observation of the Kondo Effect in a Spin-3/2 Hole Quantum Dot
• Observation of orientation- and $k$-dependent Zeeman spin-splitting in hole quantum wires on (100)-oriented AlGaAs/GaAs heterostructures
• Dimensional reduction of the Luttinger Hamiltonian and g-factors of holes in symmetric two-dimensional semiconductor heterostructures
• Piezoelectric rotator for studying quantum effects in semiconductor nanostructures at high magnetic fields and low temperatures
• Detection and control of spin-orbit interactions in a GaAs hole quantum point contact
• Using a tunable quantum wire to measure the large out-of-plane spin splitting of quasi two-dimensional holes in a GaAs nanostructure
• Electrical control of the sign of the g-factor in a GaAs hole quantum point contact
• The origin of gate hysteresis in p-type Si-doped AlGaAs/GaAs heterostructures
• Anisotropic Zeeman splitting in p-type GaAs quantum point contacts
• g-Factor anisotropy of hole quantum wires induced by the Rashba interaction
• Towards low-dimensional hole systems in Be-doped GaAs nanowires
• Modified exchange interaction between magnetic impurities in spin-orbit coupled quantum wires