Dynamics of dense spin ensemble excited in a barrier layer and detected in a well

C Shen, LG Wang, H Zhu, HZ Zheng - Science China Physics, Mechanics …, 2011 - Springer
Photoluminescence (PL) polarization of a spin ensemble was examined over a wide
excitation wavelength range from 520 nm to 700 nm and a temperature range from 3.5 K to …

Detection of optically injected spin polarized electrons in the L-valley of AlGaAs through polarization resolved photoluminescence excitation spectroscopy

SK Khamari, P Mudi, S Porwal, TK Sharma - Journal of Luminescence, 2019 - Elsevier
GaAs/AlGaAs multi quantum well (QW) architecture is employed to study the optical injection
of spin polarized electrons in Al 0.22 Ga 0.78 As material over the excitation energy range of …

Contribution of inter-valley scattering in governing the steady state optical spin orientation in Al x Ga1− x As

P Mudi, SK Khamari, TK Sharma - Journal of Physics D: Applied …, 2021 - iopscience.iop.org
The impact of inter-valley scattering in modifying the density of optically injected spin
polarized electrons in Al x Ga 1− x As/GaAs heterostructure is investigated. Polarization …

Growth condition dependence of photoluminescence polarization in (100) GaAs/AlGaAs quantum wells at room temperature

S Iba, H Saito, K Watanabe, Y Ohno… - Journal of Applied …, 2015 - pubs.aip.org
We conducted systematic measurements on the carrier lifetime (τ c), spin relaxation time (τ
s), and circular polarization of photoluminescence (P circ) in (100) GaAs/AlGaAs multiple …

Spin dynamics and magnetic field induced polarization of excitons in ultrathin GaAs/AlAs quantum wells with indirect band gap and type-II band alignment

TS Shamirzaev, J Rautert, DR Yakovlev, J Debus… - Physical Review B, 2017 - APS
The exciton spin dynamics are investigated both experimentally and theoretically in two-
monolayer-thick GaAs/AlAs quantum wells with an indirect band gap and a type-II band …

Magnetoabsorption and spin polarization inversion in GaAs/AlGaAs quantum wells

GM Jacobsen, V Lopes-Oliveira, V Laurindo Jr… - Physical Review B, 2024 - APS
The impact of the growth orientation on spin dynamics in GaAs/AlGaAs quantum wells
(QWs) is explored through magnetophotoluminescence measurements. Samples grown on …

Excitonic spin-splitting in quantum wells with a tilted magnetic field

LF dos Santos, LK Castelano, JX Padilha… - Journal of Physics …, 2016 - iopscience.iop.org
This work aims to investigate the effects of magnetic field strength and direction on the
electronic properties and optical response of GaAs/AlGaAs-based heterostructures. An …

Spin dynamics of carriers in GaAs quantum wells in an external electric field

IY Gerlovin, YK Dolgikh, SA Eliseev, VV Ovsyankin… - Physical review B, 2004 - APS
The effect of external electric bias on the kinetics of circularly polarized photoluminescence
(PL) of the GaAs quantum wells (QWs) is studied experimentally. It is found that a negative …

Photo-induced excitonic spin dynamics in GaAs

MI Miah, L Naheed - Optical and Quantum Electronics, 2015 - Springer
The dynamics of the optical orientated excitonic spins in semiconductor quantum wells has
been investigated using opposite circular polarizations of the photoluminescence (PL) …

LONG SPIN MEMORY TIMES AND FLIPPING FEATURES IN GaAs: THE HYPERFINE COUPLING EFFECT

MI Miah - Optics and Photonics Letters, 2013 - World Scientific
The flipping of optically generated spins in GaAs was investigated using pump–probe
photoluminescence polarization measurements in the presence of an external magnetic …