To establish a correlation between spin diffusion, spin lifetime, and electron density, we study spin polarization evolution in low-dimensional GaAs semiconductors hosting two-dimensional electron gases by employing time-resolved magneto-optical Kerr effect microscopy. It is shown that for the establishment of the longest spin-lifetime, the variation in the scattering rate with electron density is of more importance than fulfilling the persistent spin helix condition when the Rashba α and Dresselhaus β parameters are balanced. More specifically, regardless of α and β linear dependencies on the electron density, the spin relaxation rate is determined by the spin diffusion coefficient that depends on electron density nonmonotonously. The longest experimental spin-lifetime occurs at an electron density, corresponding to transition from Boltzmann to Fermi–Dirac statistics, which is several times higher than that when the persistent spin helix is expected. These facts highlight the role the electron density may play when considering applications for spintronic devices.
Skip Nav Destination
Article navigation
7 August 2022
Research Article|
August 02 2022
Spin helices in GaAs quantum wells: Interplay of electron density, spin diffusion, and spin lifetime
S. Anghel
;
S. Anghel
(Conceptualization, Data curation, Supervision, Writing – original draft)
1
Experimentelle Physik 2, Technische Universität Dortmund
, Otto-Hahn-Straße 4a, D-44227 Dortmund, Germany
Search for other works by this author on:
A. V. Poshakinskiy;
A. V. Poshakinskiy
(Methodology, Validation, Writing – original draft, Writing – review and editing)
2
Ioffe Institute
, St. Petersburg 194021, Russia
Search for other works by this author on:
K. Schiller;
K. Schiller
(Data curation, Formal analysis)
1
Experimentelle Physik 2, Technische Universität Dortmund
, Otto-Hahn-Straße 4a, D-44227 Dortmund, Germany
Search for other works by this author on:
G. Yusa
;
G. Yusa
(Resources, Visualization)
3
Department of Physics, Tohoku University
, Sendai 980-8578, Japan
Search for other works by this author on:
T. Mano
;
T. Mano
(Resources, Validation, Visualization)
4
National Institute for Materials Science
, Tsukuba, Ibaraki 305-0047, Japan
Search for other works by this author on:
T. Noda
;
T. Noda
(Resources, Validation, Visualization)
4
National Institute for Materials Science
, Tsukuba, Ibaraki 305-0047, Japan
Search for other works by this author on:
M. Betz
M. Betz
a)
(Data curation, Investigation, Project administration, Writing – review and editing)
1
Experimentelle Physik 2, Technische Universität Dortmund
, Otto-Hahn-Straße 4a, D-44227 Dortmund, Germany
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
a)Author to whom correspondence should be addressed: [email protected]
J. Appl. Phys. 132, 054301 (2022)
Article history
Received:
April 28 2022
Accepted:
July 06 2022
Citation
S. Anghel, A. V. Poshakinskiy, K. Schiller, G. Yusa, T. Mano, T. Noda, M. Betz; Spin helices in GaAs quantum wells: Interplay of electron density, spin diffusion, and spin lifetime. J. Appl. Phys. 7 August 2022; 132 (5): 054301. https://doi.org/10.1063/5.0097426
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
A step-by-step guide to perform x-ray photoelectron spectroscopy
Grzegorz Greczynski, Lars Hultman
Scaling effects on the microstructure and thermomechanical response of through silicon vias (TSVs)
Shuhang Lyu, Thomas Beechem, et al.
Related Content
Effect of cubic Dresselhaus spin-orbit interaction in a persistent spin helix state including phonon scattering in semiconductor quantum wells
Appl. Phys. Lett. (November 2015)
Generation of dc spin current in a narrow channel with Rashba and Dresselhaus spin-orbit interactions
J. Vac. Sci. Technol. B (August 2008)
Non-equilibrium study of spin wave interference in systems with both Rashba and Dresselhaus (001) spin-orbit coupling
J. Appl. Phys. (March 2014)
Anisotropic transport in quantum waveguides due to the spin-orbit interactions
Appl. Phys. Lett. (February 2009)
Determination of Rashba and Dresselhaus spin-orbit fields
J. Appl. Phys. (September 2011)