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The spin Hall effect in semiconductors

Grant number: 13/03450-7
Support type:Regular Research Grants
Duration: June 01, 2013 - May 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Physics
Principal Investigator:Felix Guillermo Gonzalez Hernandez
Grantee:Felix Guillermo Gonzalez Hernandez
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The generation of spin currents with the application of electric fields is a subject of intense research in the field of microelectronics - a new and promising research line called spintronics that can lead to important practical applications. The spin Hall effect is an effective method to control the conduction of a spin current in a electronic device using the spin-orbit coupling. In this project we propose the study of the spin Hall effect in GaAs and InAs quantum wells doped with electrons and holes. The main focus of this proposal is to optimize the structure geometry in order to increase the spin-orbit interaction with the analysis of the effects in non-magnetic semiconductors. This goal will be obtain by time-resolved Kerr effect and transport measurements. (AU)

Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ULLAH, S.; GUSEV, G. M.; BAKAROV, A. K.; HERNANDEZ, F. G. G. Tailoring multilayer quantum wells for spin devices. PRAMANA-JOURNAL OF PHYSICS, v. 91, n. 3 SEP 2018. Web of Science Citations: 0.
ULLAH, S.; MORAES, F. C. D.; GUSEV, G. M.; BAKAROV, A. K.; HERNANDEZ, F. G. G. Robustness of spin polarization against temperature in multilayer structure: Triple quantum well. Journal of Applied Physics, v. 123, n. 21 JUN 7 2018. Web of Science Citations: 0.
LUENGO-KOVAC, M.; MORAES, F. C. D.; FERREIRA, G. J.; RIBEIRO, A. S. L.; GUSEV, G. M.; BAKAROV, A. K.; SIH, V.; HERNANDEZ, F. G. G. Gate control of the spin mobility through the modification of the spin-orbit interaction in two-dimensional systems. Physical Review B, v. 95, n. 24 JUN 30 2017. Web of Science Citations: 3.
ULLAH, S.; GUSEV, G. M.; BAKAROV, A. K.; HERNANDEZ, F. G. G. Large anisotropic spin relaxation time of exciton bound to donor states in triple quantum wells. Journal of Applied Physics, v. 121, n. 20 MAY 28 2017. Web of Science Citations: 3.
HERNANDEZ, F. G. G.; ULLAH, S.; FERREIRA, G. J.; KAWAHALA, N. M.; GUSEV, G. M.; BAKAROV, A. K. Macroscopic transverse drift of long current-induced spin coherence in two-dimensional electron gases. Physical Review B, v. 94, n. 4 JUL 14 2016. Web of Science Citations: 6.
ULLAH, S.; GUSEV, G. M.; BAKAROV, A. K.; HERNANDEZ, F. G. G. Long-lived nanosecond spin coherence in high-mobility 2DEGs confined in double and triple quantum wells. Journal of Applied Physics, v. 119, n. 21 JUN 7 2016. Web of Science Citations: 8.
ALTMANN, P.; HERNANDEZ, F. G. G.; FERREIRA, G. J.; KOHDA, M.; REICHL, C.; WEGSCHEIDER, W.; SALIS, G. Current-Controlled Spin Precession of Quasistationary Electrons in a Cubic Spin-Orbit Field. Physical Review Letters, v. 116, n. 19 MAY 9 2016. Web of Science Citations: 15.
HERNANDEZ, F. G. G.; GUSEV, G. M.; BAKAROV, A. K. Resonant optical control of the electrically induced spin polarization by periodic excitation. Physical Review B, v. 90, n. 4 JUL 14 2014. Web of Science Citations: 7.
HERNANDEZ, F. G. G.; NUNES, L. M.; GUSEV, G. M.; BAKAROV, A. K. Observation of the intrinsic spin Hall effect in a two-dimensional electron gas. Physical Review B, v. 88, n. 16 OCT 29 2013. Web of Science Citations: 19.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.