Effect of angle-dependent Gilbert damping due to spin pumping on the magnetization dynamics induced by spin current

2006 ◽  
Author(s):  
W. Kim ◽  
K. Lee ◽  
T. Lee
Keyword(s):  
Spin Current ◽  
Magnetization Dynamics ◽  
Gilbert Damping ◽  
Spin Pumping

scholarly journals Temperature dependence of Gilbert damping in manganite/normal metal heterostructure

2018 ◽  
Vol 185 ◽  
pp. 02007
Author(s):  
Timur A. Shcaihulov ◽  
Victor V. Demidov ◽  
Igor V. Borisenko ◽  
Gennady A. Ovsyannikov
Keyword(s):  
Temperature Dependence ◽  
Ferromagnetic Resonance ◽  
Ferromagnetic Layer ◽  
Spin Current ◽  
Liquid Nitrogen Temperature ◽  
Gilbert Damping ◽  
Spin Pumping ◽  
Manganite Film ◽  
Ferromagnetic Resonance Spectrum ◽  
Lower Liquid

The temperature dependence of the spin-pumping effect on the Gilbert damping in a bilayer based on epitaxial manganite film grown on neodymium galate substrate was investigated by measuring of the linewidth of the ferromagnetic resonance spectrum (FMR). Ferromagnetic resonance in thin ferromagnetic manganite La0.7Sr0.3MnO3 (LSMO) films is used to produce a spin current at the interface between a metallic and a ferromagnetic layer. Pt/LSMO/NGO, Au/LSMO/NGO and LSMO/NGO heterostrucutres were measured. An increase of the linewidth in FMR spectrum at the temperature lower liquid nitrogen temperature (77K) is observed .

scholarly journals All-optical detection of interfacial spin transparency from spin pumping in β-Ta/CoFeB thin films

2019 ◽  
Vol 5 (4) ◽  
pp. eaav7200 ◽  
Author(s):  
S. N. Panda ◽  
S. Mondal ◽  
J. Sinha ◽  
S. Choudhury ◽  
A. Barman
Keyword(s):  
Thin Films ◽  
Spin Diffusion ◽  
Memory Loss ◽  
Spin Current ◽  
Pure Spin ◽  
Gilbert Damping ◽  
Time Resolved ◽  
Spin Pumping ◽  
Pumping Effect ◽  
All Optical

Generation and utilization of pure spin current have revolutionized energy-efficient spintronic devices. Spin pumping effect generates pure spin current, and for its increased efficiency, spin-mixing conductance and interfacial spin transparency are imperative. The plethora of reports available on generation of spin current with giant magnitude overlook the interfacial spin transparency. Here, we investigate spin pumping in β-Ta/CoFeB thin films by an all-optical time-resolved magneto-optical Kerr effect technique. From variation of Gilbert damping with Ta and CoFeB thicknesses, we extract the spin diffusion length of β-Ta and spin-mixing conductances. Consequently, interfacial spin transparency is derived as 0.50 ± 0.03 from the spin Hall magnetoresistance model for the β-Ta/CoFeB interface. Furthermore, invariance of Gilbert damping with Cu spacer layer thickness inserted between β-Ta and CoFeB layers confirms the absence of other interface effects including spin memory loss. This demonstrates a reliable and noninvasive way to determine interfacial spin transparency and signifies its role in generation of pure spin current by spin pumping effect.

scholarly journals Spin current study of spin glass AgMn using spin pumping effect

2011 ◽  
Vol 266 ◽  
pp. 012089 ◽  
Author(s):  
R Iguchi ◽  
K Ando ◽  
E Saitoh ◽  
T Sato
Keyword(s):  
Spin Glass ◽  
Spin Current ◽  
Spin Pumping ◽  
Pumping Effect

scholarly journals Optically excited spin pumping mediating collective magnetization dynamics in a spin valve structure

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
A. P. Danilov ◽  
A. V. Scherbakov ◽  
B. A. Glavin ◽  
T. L. Linnik ◽  
A. M. Kalashnikova ◽  
...  
Keyword(s):  
Spin Valve ◽  
Magnetization Dynamics ◽  
Spin Pumping ◽  
Valve Structure

Spin Current Generation by Spin Pumping

2016 ◽  
pp. 1481-1504
Author(s):  
Kazuya Ando ◽  
Eiji Saitoh
Keyword(s):  
Spin Current ◽  
Current Generation ◽  
Spin Pumping

Modulation of magnetization dynamics in an epitaxial Heusler ferromagnet due to pure spin current in a laterally configured structure

2018 ◽  
Vol 30 (25) ◽  
pp. 255802
Author(s):  
Soichiro Oki ◽  
Yuta Sasaki ◽  
Yuichi Kasatani ◽  
Shinya Yamada ◽  
Shigemi Mizukami ◽  
...  
Keyword(s):  
Spin Current ◽  
Pure Spin ◽  
Magnetization Dynamics

Gilbert Damping in Annealed Perpendicular Exchange Biased CoFeB/Pt/MnIr Multilayers

SPIN ◽  
2020 ◽  
Vol 10 (01) ◽  
pp. 2050008
Author(s):  
Hai-Lin Hu ◽  
Jia-Qi Yan ◽  
Wei Li ◽  
Xiao-Yu Yang ◽  
Shi-Tao Lou ◽  
...  
Keyword(s):  
Exchange Bias ◽  
Exchange Coupling ◽  
Magnetic Multilayers ◽  
Gilbert Damping ◽  
Time Resolved ◽  
Pump Probe ◽  
Spin Pumping ◽  
Pulsed Dc ◽  
Pulsed Dc Magnetron Sputtering ◽  
Different Thickness

Exchange bias and intrinsic Gilbert damping [Formula: see text] are two important parameters in magnetic multilayers. To explore the correlation between exchange coupling and damping, the samples Ta (2.6[Formula: see text]nm)/Pt (2.5[Formula: see text]nm)/Co[Formula: see text]Fe[Formula: see text]B[Formula: see text] (0.63[Formula: see text]nm)/Pt (0.5[Formula: see text]nm)/Mn[Formula: see text]Ir[Formula: see text] ([Formula: see text])/Ta (4[Formula: see text]nm) are deposited by using pulsed-DC magnetron sputtering. The static and dynamic magnetic responses with different thickness of antiferromagnetic MnIr are investigated using vibrating sample magnetometer (VSM) and the pump-probe time-resolved magneto-optical Kerr effect (TR-MOKE). The exchange bias initially increases and then decreases with increasing thickness of MnIr layer, which is associated with the interfacial exchange coupling. The dynamic results demonstrate that the Gilbert damping of CoFeB/Pt/MnIr can increase by up to 40% compared with CoFeB/Pt. Based on the fact that the spin pumping has been excluded because of the Pt interlayer, we attribute the enhancement in Gilbert damping to the exchange coupling between AFM and FM.

Spin Pumping in a Ferromagnetic/Nonmagnetic/Spin-Sink Trilayer Film: Spin Current Termination

2012 ◽  
Vol 508 ◽  
pp. 266-270 ◽  
Author(s):  
K. Harii ◽  
Z. Qiu ◽  
T. Iwashita ◽  
Y. Kajiwara ◽  
K. Uchida ◽  
...  
Keyword(s):  
Diffusion Equation ◽  
Hall Effect ◽  
Spin Diffusion ◽  
Diffusion Length ◽  
Spin Current ◽  
Interlayer Thickness ◽  
Spin Pumping ◽  
Charge Current ◽  
Inverse Spin Hall Effect ◽  
Spin Diffusion Length

A Spin Current Generated by Spin Pumping in a Ferromagnetic/Nonmagnetic/Spin-Sink Trilayer Film Is Calculated Based on the Spin Pumping Theory and the Standard Spin Diffusion Equation. By Attaching the Spin-Sink Layer, the Injected Spin Current Is Drastically Enhanced when the Interlayer Thickness Is Shorter than the Spin Diffusion Length of the Interlayer. We Also Provided the Formula of the Charge Current which Is Induced from the Pumped Spin Current via the Inverse Spin-Hall Effect.

scholarly journals Nearly isotropic spin-pumping related Gilbert damping in Pt/Ni81Fe19/Pt

2019 ◽  
Vol 99 (9) ◽  
Author(s):  
W. Cao ◽  
L. Yang ◽  
S. Auffret ◽  
W. E. Bailey
Keyword(s):  
Gilbert Damping ◽  
Spin Pumping ◽  
Isotropic Spin
Sign in / Sign up

Export Citation Format

Share Document