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Spin noise in two-dimensional electron gases

Grant number: 16/50018-1
Support type:Regular Research Grants
Duration: May 01, 2016 - April 30, 2018
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Cooperation agreement: University of Michigan
Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
Principal Investigator:Felix Guillermo Gonzalez Hernandez
Grantee:Felix Guillermo Gonzalez Hernandez
Principal investigator abroad: Vanessa Sih
Institution abroad: University of Michigan, United States
Home Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:14/25981-7 - Generating and mapping spin currents with space and time resolution, AP.R


The study of the spin noise in semiconductors is an intense new research topic within the field of spintronics - a very promising line of the microelectronics research that can lead to important practical applications. While measurements in bulk and quantum dots have been recently reported, the study of two-dimensional electron gases in quantum wells is still open. We propose a collaborative effort on this topic using the large experience of both groups in such systems [see, e.g., VS et al., Nature Phys. 1,31 (2005), FGGH et al., PRB 88, 161305R (2013)], and a very new ultrafast method developed in Michigan [APL 107, 182102 (2015)]. The current FAPESP grant in Sao Paulo, focused in the generation of spin currents, will be also extended towards the investigation of noise and the dynamic nuclear polarization [VS et al., PRL 112, 056601 (2014)] in the current-induced electron spin polarization [VS et al., PRB 90, 085122 (2014), FGGH et al., PRB 90, 041302R (2014)]. (AU)

Scientific publications
(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)
HERNANDEZ, F. G. G.; FERREIRA, G. J.; LUENGO-KOVAC, M.; SIH, V; KAWAHALA, N. M.; GUSEV, G. M.; BAKAROV, A. K. Electrical control of spin relaxation anisotropy during drift transport in a two-dimensional electron gas. Physical Review B, v. 102, n. 12 SEP 15 2020. Web of Science Citations: 0.
KAWAHALA, N. M.; MORAES, F. C. D.; GUSEV, G. M.; BAKAROV, A. K.; HERNANDEZ, F. G. G. Experimental analysis of the spin-orbit coupling dependence on the drift velocity of a spin packet. AIP ADVANCES, v. 10, n. 6 JUN 1 2020. Web of Science Citations: 0.

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