Spin coherence of holes in GaAs/AlGaAs quantum wells

Abstract

The carrier spin coherence in a p-doped GaAs/(Al,Ga)As quantum well with a diluted hole gas has been studied by picosecond pump-probe Kerr rotation with an in-plane magnetic field. For resonant optical excitation of the positively charged exciton the spin precession shows two types of oscillations. Fast oscillating electron spin beats decay with the radiative lifetime of the charged exciton of 50 ps. Long lived spin coherence of the holes with dephasing times up to 650 ps. The spin dephasing time as well as the in-plane hole g factor show strong temperature dependence, underlining the importance of hole localization at cryogenic temperatures.

arXiv comment5 pages, 4 figures in PostScript format

References in corpus (7)

• Spintronics: Fundamentals and applications
• Quantum Computation with Quantum Dots
• Electron spin relaxation by nuclei in semiconductor quantum dots
• Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots
• Optical Read-Out and Initialization of an Electron Spin in a Single Quantum Dot
• Highly anisotropic g-factor of two-dimensional hole systems
• Hole spin dephasing in $p$-type semiconductor quantum wells

Cited by in corpus (30)

• Spin dynamics in semiconductors
• Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
• Coherent control and suppressed nuclear feedback of a single quantum dot hole qubit
• Spin noise of electrons and holes in self-assembled quantum dots
• Spin coherence of a two-dimensional electron gas induced by resonant excitation of trions and excitons in CdTe/(Cd,Mg)Te quantum wells
• Spin interactions, relaxation and decoherence in quantum dots
• Engineering ultralong spin coherence in two-dimensional hole systems at low temperatures
• Strong influence of spin-orbit coupling on magnetotransport in two-dimensional hole systems
• Anisotropic spin relaxation revealed by resonant spin amplification in (110) GaAs quantum wells
• Electrical control of the Zeeman spin splitting in two-dimensional hole systems
• Electron spin relaxation in paramagnetic Ga(Mn)As quantum wells
• Spin dynamics of electrons and holes in InGaAs/GaAs quantum wells at milliKelvin temperatures
• Nonlinear optical spectroscopy of indirect excitons in biased coupled quantum wells
• Decoherence-assisted initialization of a resident hole spin polarization in a two-dimensional hole gas
• Spin polarization, dephasing and photoinduced spin diffusion in (110)-grown two-dimensional electron systems
• Using a tunable quantum wire to measure the large out-of-plane spin splitting of quasi two-dimensional holes in a GaAs nanostructure
• Hole spin dynamics and hole $g$ factor anisotropy in coupled quantum well systems
• Theory of the time-resolved Kerr rotation on trapped holes
• Optical polarization of localized hole spins in p-doped quantum wells
• Asymmetric $g$ tensor in low-symmetry two-dimensional hole systems
• The in-plane anisotropy of the hole $g$ factor in CdTe/(Cd,Mg)Te quantum wells studied by spin-dependent photon echoes
• Cyclotron-resonant exciton transfer between the nearly free and strongly localized radiative states of a two-dimensional hole gas in a high magnetic field
• Spin dynamics of electrons in the first excited subband of a high-mobility low-density 2D electron system
• Aharonov-Bohm rings with strong spin-orbit interaction: the role of sample-specific properties
• Optical initialization of hole spins in p-doped quantum dots: orientation efficiency and loss of coherence
• Spin dependent analysis of homogeneous and inhomogeneous exciton decoherence in magnetic fields
• Spin dynamics in p-doped semiconductor nanostructures subject to a magnetic field tilted from the Voigt geometry
• Spin dynamics and magneto-optical response in charge-neutral tunnel-coupled quantum dots
• Effect of Ka-band Microwave on the spin dynamics of electrons in a GaAs/Al0.35Ga0.65As heterostructure
• Spin properties in droplet epitaxy-grown telecom quantum dots