Hole spin relaxation in $p$-type GaAs quantum wires

Abstract

We investigate the spin relaxation of $p$-type GaAs quantum wires by numerically solving the fully microscopic kinetic spin Bloch equations. We find that the quantum-wire size influences the spin relaxation time effectively by modulating the energy spectrum and the heavy-hole--light-hole mixing of wire states. The effects of quantum-wire size, temperature, hole density, and initial polarization are investigated in detail. We show that, depending on the situation, the spin relaxation time can either increase or decrease with hole density. Due to the different subband structure and effects arising from spin-orbit coupling, many spin-relaxation properties are quite different from those of holes in the bulk or in quantum wells, and the inter-subband scattering makes a marked contribution to the spin relaxation.

10 pages, 7 figures, Phys. Rev. B 78, 2008, in press

References in corpus (32)

• Spintronics: Fundamentals and applications
• Non-ballistic spin field-effect transistor
• Electron Spin Decoherence in Bulk and Quantum Well Zincblende Semiconductors
• High temperature spin dephasing in n-typed GaAs quantum wells
• Spin coherence of a two-dimensional electron gas induced by resonant excitation of trions and excitons in CdTe/(Cd,Mg)Te quantum wells
• Zeeman splitting in ballistic hole quantum wires
• Effect of initial spin polarization on spin dephasing and electron g factor in a high-mobility two-dimensional electron system
• Hot-electron effect in spin dephasing in $n$-type GaAs quantum wells
• Spin relaxation in $n$-type GaAs quantum wells from a full microscopic approach
• Kinetics of spin coherence of electrons in an undoped semiconductor quantum well
• Semiclassical Monte Carlo Model for In-Plane Transport of Spin-Polarized Electrons in III-V Heterostructures
• Rashba precession in quantum wires with interaction
• Anisotropic spin splitting and spin relaxation in asymmetric zinc-blende semiconductor quantum structures
• Ballistic transport in induced one-dimensional hole systems
• Spin Relaxation in a Two-Dimensional Electron Gas in a Perpendicular Magnetic Field
• Conductance quantization and the 0.7x2e2/h conductance anomaly in one-dimensional hole systems
• Hole spin dephasing in $p$-type semiconductor quantum wells
• Spin relaxation in narrow wires of a two-dimensional electron gas
• Multi-subband effect in spin dephasing in semiconductor quantum wells
• Anomalous magneto-oscillations in two-dimensional systems
• Spin relaxation due to the Bir-Aronov-Pikus mechanism in intrinsic and $p$-type GaAs quantum wells from a fully microscopic approach
• Large variations in the hole spin splitting of quantum-wire subband edges
• Valence band spectroscopy in V-grooved quantum wires
• Spin relaxation under identical Dresselhaus and Rashba coupling strengths in GaAs quantum wells
• Semiclassical kinetic theory of electron spin relaxation in semiconductors
• Spin-dependent transport in lateral periodic magnetic modulations: a novel scheme for spin filters
• Robust strongly-modulated transmission of a $T$-shaped structure with local Rashba interaction
• Spin relaxation in n-doped gallium arsenide due to impurity and electron-electron Elliot-Yafet scattering
• Valence band structure, edge states and interband absorption in Quantum Well Wires in high magnetic fields
• Tailoring hole spin splitting and polarization in nanowires
• Manipulation of spin dephasing in InAs quantum wires
• Spin relaxation of "upstream" electrons in quantum wires: Failure of the drift diffusion model

Cited by in corpus (9)

• Spin dynamics in semiconductors
• Hole spin relaxation in intrinsic and $p$-type bulk GaAs
• Pulse-pumped double quantum dot with spin-orbit coupling
• Nonlinear Spin-Charge Dynamics in a Driven Double Quantum Dot
• Relaxation of flying spin qubits in quantum wires by hyperfine interaction
• Spin freezing by Anderson localization in one-dimensional semiconductors
• Rashba-coupling modelling for two-dimensional and high-order Rashba Hamiltonian for one-dimensional confined heavy holes
• Hole spin relaxation in [001] strained asymmetric Si/SiGe and Ge/SiGe quantum wells
• Electron spin relaxation in n-type InAs quantum wires