An upper and lower bound to the orientation-dependent linear Rashba spin-orbit coupling of two-dimensional hole gases in semiconductor quantum wells
arXiv:2107.07681 · doi:10.1103/PhysRevB.105.115303
Abstract
Our recent study [Phys. Rev. B 103, 085309 (2021)] verified the existence of -linear Rashba spin-orbit coupling (SOC) of two-dimensional hole gases in quantum wells (QWs) which originates from a combination of heavy-hole-light-hole (HH-LH) mixing and direct dipolar coupling to the external electric field. However, the Rashba SOC dependence on QW orientations remains unclear. Here, we explore this dependence on QW orientations and uncover an upper and lower bound to the orientation-dependent -linear Rashba SOC along the [110]- and [111]- crystalline directions by performing atomistic pseudopotential calculations associated with theoretical analysis. The intrinsic HH-LH mixing at the Brillouin zone center, maximal in [110]-oriented quantum wells and minimal in [111]- and [001]-oriented QWs, plays an essential role. Remarkably, we find that only -cubic Rashba SOC exists in [111]-oriented QWs. These findings help understand the physical mechanism of the Rashba SOC dependence on QW orientations and provide a strategic prediction for experiments to realize the large Rashba SOC.
arXiv comment8 pages, 4 figures, 1 table
References in corpus (42)
- Universal Intrinsic Spin-Hall Effect
- New Perspectives for Rashba Spin-Orbit Coupling
- An addressable quantum dot qubit with fault-tolerant control fidelity
- A >99.9%-fidelity quantum-dot spin qubit with coherence limited by charge noise
- Non-ballistic spin field-effect transistor
- Electron spin coherence exceeding seconds in high purity silicon
- A CMOS silicon spin qubit
- Hidden spin polarization in inversion-symmetric bulk crystals
- Comparison of two methods for describing the strain profiles in quantum dots
- A four-qubit germanium quantum processor
- The germanium quantum information route
- Theoretical interpretation of the experimental electronic structure of lens shaped, self-assembled InAs/GaAs quantum dots
- Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
- Spin relaxation and decoherence of holes in quantum dots
- Fast two-qubit logic with holes in germanium
- Rashba spin splitting in two-dimensional electron and hole systems
- Ge hole spin qubit
- Spin Relaxation in Ge/Si Core-Shell Nanowire Qubits
- Strong Spin-Orbit Interaction and Helical Hole States in Ge/Si Nanowires
- Electric Dipole Spin Resonance for Heavy Holes in Quantum Dots
- Intrinsic Spin Hall Effect in the Two Dimensional Hole Gas
- Low disordered, stable, and shallow germanium quantum wells: a playground for spin and hybrid quantum technology
- Cubic Rashba spin-orbit interaction of two-dimensional hole gas in strained-Ge/SiGe quantum well
- Gate-controlled quantum dots and superconductivity in planar germanium
- Spin-Hall transport of heavy holes in III-V semiconductor quantum wells
- Direct Rashba spin-orbit interaction in Si and Ge nanowires with different growth directions
- Circuit QED with Hole-Spin Qubits in Ge/Si Nanowire Quantum Dots
- Spin Splitting in Symmetrical SiGe Quantum Wells
- Spin-orbit interactions in inversion-asymmetric 2D hole systems: a variational analysis
- Electric field effect on electron spin splitting in SiGe/Si quantum wells
- Spin-orbit splitting of valence subbands in semiconductor nanostructures
- Impact of heavy hole-light hole coupling on optical selection rules in GaAs quantum dots
- Spin-injection Hall effect in a planar photovoltaic cell
- Genetic Design of Enhanced Valley Splitting towards a Spin Qubit in Silicon
- Observation of a cubic Rashba effect in the surface spin structure of rare-earth ternary materials
- Prediction of large linear-in-k spin splitting for holes in the 2D GaAs/AlAs system
- Supercoupling between heavy-hole and light-hole states in self-assembled quantum dots
- Higher order contributions to Rashba and Dresselhaus effects
- Anomalous spin-resolved point-contact transmission of holes due to cubic Rashba spin-orbit coupling
- Emergence of the strong tunable linear Rashba spin-orbit coupling of two-dimensional hole gases in semiconductor quantum
- Photoluminescence pressure coefficients of InAs/GaAs quantum dots
- Highly tuneable hole quantum dots in Ge-Si core-shell nanowires