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Detecção elétrica de correntes de spin em sistemas nano-estruturados
(Universidade Federal de Santa MariaCentro de Ciências Naturais e Exatas, 2016-12-15)
Spintronics is an emergent research field that seeks a better understanding of the role of electronic spin in solid state physics. Exploring electrons’ charge and spin, significant technological advances might be achieved, ...
Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects
(American Institute of Physics, 2014-10)
We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall ...
Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd
(Universidade Federal de Santa MariaBrasilFísicaUFSMPrograma de Pós-Graduação em FísicaCentro de Ciências Naturais e Exatas, 2017-03-02)
In this work, we analyzed samples of thin films Ni81Fe19 and Pd with ZnO spacer. Ni81Fe19
is a ferromagnet with a low saturation magnetic field. Pd is a normal metal with high spinorbit
coupling, much used in spin Hall ...
Kubo-Bastin approach for the spin Hall conductivity of decorated graphene
(2016-05-31)
Theoretical predictions and recent experimental results suggest one can engineer spin Hall effect in graphene by enhancing the spin-orbit coupling (SOC) in the vicinity of an impurity. We use a Chebyshev expansion of the ...
Spin pumping and inverse spin Hall effect in antiferromagnetic exchange coupled [Co/Ru/Co]/Pt heterostructures
(American Institute of Physics, 2017-01)
We report the observation of spin pumping and inverse spin Hall effects in antiferromagnetically coupled [Co/Ru/Co]/Pt heterostructures. The “spin-flop” magnetization process observed in antiferromagnetically exchange ...
Efeito hall de spin inverso em multicamadas de Ta/NiFe/FeMn/Ta
(Universidade Federal de Santa MariaBrasilFísicaUFSMPrograma de Pós-Graduação em FísicaCentro de Ciências Naturais e Exatas, 2017-10-27)
In the present thesis, the generation of a dc voltage in exchange-biased Ta/NiFe/FeMn/Ta
multilayers at ferromagnetic resonance was investigated. This dc signal is related to two distinct
phenomena, namely, the spin ...
Magnetoelectric tuning of the inverse spin-Hall effect
(American Institute of Physics, 2017-05-09)
We demonstrate in this article that the magnetoelectric (ME) mechanism can be exploited to control the spin current emitted in a spin pumping experiment using moderate electric fields. Spin currents were generated at the ...
Pure spin current manipulation in antiferromagnetically exchange coupled heterostructures
(American Institute of Physics, 2018-03-28)
We present a model to describe the spin currents generated by ferromagnet/spacer/ferromagnet exchange coupled trilayer systems and heavy metal layers with strong spin-orbit coupling. By exploiting the magnitude of the ...
High performance electronic device for the measurement of the inverse spin Hall effect
(American Institute of Physics, 2016-02)
We have developed a high performance analog electronic device that can be used for the measurement of the inverse spin Hall effect (ISHE) as a function of the applied magnetic field. The electronic circuit is based on the ...
Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials
(Universidade Federal de Pernambuco, 2015)