scholarly journals Resonant driving of magnetization precession in a ferromagnetic layer by coherent monochromatic phonons

2015 ◽  
Vol 92 (2) ◽  
Author(s):  
J. V. Jäger ◽  
A. V. Scherbakov ◽  
B. A. Glavin ◽  
A. S. Salasyuk ◽  
R. P. Campion ◽  
...  
Keyword(s):  
Ferromagnetic Layer ◽  
Magnetization Precession

scholarly journals Impact of ferromagnetic layer thickness on the spin pumping in Co60Fe20B20/Ta bilayer thin films

2021 ◽  
Author(s):  
Soumyarup Hait ◽  
Sajid Husain ◽  
Nanhe Kumar Gupta ◽  
Nilamani Behera ◽  
Ankit Kumar ◽  
...  
Keyword(s):  
Thin Films ◽  
Layer Thickness ◽  
Ferromagnetic Layer ◽  
Spin Pumping

scholarly journals Nonreciprocal charge transport up to room temperature in bulk Rashba semiconductor α-GeTe

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yan Li ◽  
Yang Li ◽  
Peng Li ◽  
Bin Fang ◽  
Xu Yang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Room Temperature ◽  
Theoretical Calculations ◽  
Ferromagnetic Layer ◽  
Spin Splitting ◽  
New Paradigm ◽  
Rashba Spin ◽  
Rashba Spin Splitting ◽  
Fundamental Insight ◽  
Insight Into

AbstractNonmagnetic Rashba systems with broken inversion symmetry are expected to exhibit nonreciprocal charge transport, a new paradigm of unidirectional magnetoresistance in the absence of ferromagnetic layer. So far, most work on nonreciprocal transport has been solely limited to cryogenic temperatures, which is a major obstacle for exploiting the room-temperature two-terminal devices based on such a nonreciprocal response. Here, we report a nonreciprocal charge transport behavior up to room temperature in semiconductor α-GeTe with coexisting the surface and bulk Rashba states. The combination of the band structure measurements and theoretical calculations strongly suggest that the nonreciprocal response is ascribed to the giant bulk Rashba spin splitting rather than the surface Rashba states. Remarkably, we find that the magnitude of the nonreciprocal response shows an unexpected non-monotonical dependence on temperature. The extended theoretical model based on the second-order spin–orbit coupled magnetotransport enables us to establish the correlation between the nonlinear magnetoresistance and the spin textures in the Rashba system. Our findings offer significant fundamental insight into the physics underlying the nonreciprocity and may pave a route for future rectification devices.

scholarly journals Spin pumping and magnetization-precession trajectory in thin film systems

2011 ◽  
Vol 266 ◽  
pp. 012101
Author(s):  
T Nonaka ◽  
K Ando ◽  
T Yoshino ◽  
E Saitoh
Keyword(s):  
Thin Film ◽  
Spin Pumping ◽  
Magnetization Precession

Ferromagnetic resonance evidence for a surface ferromagnetic layer in Co-Cr thin films

1986 ◽  
Vol 54-57 ◽  
pp. 1689-1690 ◽  
Author(s):  
M.L. Cofield ◽  
C.F. Brucker ◽  
J.S. Gau ◽  
J.T. Gerard
Keyword(s):  
Thin Films ◽  
Ferromagnetic Resonance ◽  
Ferromagnetic Layer

scholarly journals Proximity effect in [Nb(1.5 nm)/Fe(x)]10/Nb(50 nm) superconductor/ferromagnet heterostructures

2020 ◽  
Vol 11 ◽  
pp. 1254-1263
Author(s):  
Yury Khaydukov ◽  
Sabine Pütter ◽  
Laura Guasco ◽  
Roman Morari ◽  
Gideok Kim ◽  
...  
Keyword(s):  
Intermediate State ◽  
Proximity Effect ◽  
Intermediate Phase ◽  
Ferromagnetic Layer ◽  
Residual Resistivity ◽  
Neutron Reflectometry ◽  
Superconducting Transition ◽  
Residual Resistivity Ratio ◽  
Resistivity Ratio ◽  
Weak Ferromagnetic

We have investigated the structural, magnetic and superconduction properties of [Nb(1.5 nm)/Fe(x)]10 superlattices deposited on a thick Nb(50 nm) layer. Our investigation showed that the Nb(50 nm) layer grows epitaxially at 800 °C on the Al2O3(1−102) substrate. Samples grown at this condition possess a high residual resistivity ratio of 15–20. By using neutron reflectometry we show that Fe/Nb superlattices with x < 4 nm form a depth-modulated FeNb alloy with concentration of iron varying between 60% and 90%. This alloy has weak ferromagnetic properties. The proximity of this weak ferromagnetic layer to a thick superconductor leads to an intermediate phase that is characterized by a suppressed but still finite resistance of structure in a temperature interval of about 1 K below the superconducting transition of thick Nb. By increasing the thickness of the Fe layer to x = 4 nm the intermediate phase disappears. We attribute the intermediate state to proximity induced non-homogeneous superconductivity in the structure.

scholarly journals Температурная зависимость напряжения, вызванного спиновым током в гетероструктуре манганит/иридат

2021 ◽  
Vol 63 (9) ◽  
pp. 1321
Author(s):  
Т.А. Шайхулов ◽  
К.Л. Станкевич ◽  
К.И. Константинян ◽  
В.В. Демидов ◽  
Г.А. Овсянников
Keyword(s):  
Thin Film ◽  
Single Crystal ◽  
Temperature Dependence ◽  
Hall Effect ◽  
Ferromagnetic Resonance ◽  
Room Temperature ◽  
Ferromagnetic Layer ◽  
Spin Current ◽  
Epitaxial Thin Film ◽  
Inverse Spin Hall Effect

The temperature dependence of the voltage induced by the spin current was studied in an epitaxial thin-film La0.7Sr0.3MnO3 / SrIrO3 heterostructure deposited on a single-crystal NdGaO3 substrate. The spin current was generated by microwave pumping under conditions of ferromagnetic resonance in the La0.7Sr0.3MnO3 ferromagnetic layer and was detected in the SrIrO3 layer due to inverse spin Hall effect. A significant increase of half-width of the spin current spectrum along with the rise of amplitude of the spin current upon cooling from room temperature (300 K) to 135 K were observed.

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