Enhancement of the Spin Pumping Effect by Magnon Confluence Process in YIG/Pt Bilayers

2019 ◽  
Vol 256 (9) ◽  
pp. 1900121 ◽  
Author(s):  
Timo B. Noack ◽  
Vitaliy I. Vasyuchka ◽  
Dmytro A. Bozhko ◽  
Björn Heinz ◽  
Pascal Frey ◽  
...  
Keyword(s):  
Spin Pumping ◽  
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

Determination of spin pumping effect in CoFeB/Ir bilayer

2020 ◽  
Vol 497 ◽  
pp. 165971
Author(s):  
Rui Sun ◽  
Yan Li ◽  
Z.K. Xie ◽  
Yang Li ◽  
Xiao-Tian Zhao ◽  
...  
Keyword(s):  
Spin Pumping ◽  
Pumping Effect

scholarly journals Quantum Adiabatic Pumping in Rashba- Dresselhaus-Aharonov-Bohm Interferometer

Entropy ◽  
2019 ◽  
Vol 21 (9) ◽  
pp. 828
Author(s):  
Yasuhiro Tokura
Keyword(s):  
Interaction Strength ◽  
Orbit Interaction ◽  
External Control ◽  
Spin Orbit ◽  
Control Parameters ◽  
Spin Orbit Interaction ◽  
Spin Pumping ◽  
One Dimensional ◽  
Pumping Effect ◽  
Aharonov Bohm

We investigate the quantum adiabatic pumping effect in an interferometer attached to two one-dimensional leads. The interferometer is subjected to an Aharonov-Bohm flux and Rashba-Dresselhaus spin-orbit interaction. Using Brouwer’s formula and rigorous scattering eigenstates, we obtained the general closed formula for the pumping Berry curvatures depending on spin for general interferometers when the external control parameters only modulate the scattering eigenstates and corresponding eigenvalues. In this situation, pumping effect is absent in the combination of the control parameters of Aharonov-Bohm flux and spin-orbit interaction strength. We have shown that finite pumping is possible by modulating both Rashba and Dresselhaus interaction strengths and explicitly demonstrated the spin-pumping effect in a diamond-shaped interferometer made of four sites.

scholarly journals A NOTE ON SPIN PUMPING THEORY WITH LANDAU–LIFSHITZ–GILBERT EQUATION UNDER QUANTUM FLUCTUATION; NECESSITY FOR QUANTIZATION OF LOCALIZED SPIN

2012 ◽  
Vol 26 (15) ◽  
pp. 1250093 ◽  
Author(s):  
KOUKI NAKATA
Keyword(s):  
Degrees Of Freedom ◽  
Quantum Fluctuation ◽  
Point Of View ◽  
Experimental Results ◽  
Spin Pumping ◽  
Pumping Effect ◽  
Blind Spots

We would like to point out the blind spots of the approach combining the spin pumping theory proposed by Tserkovnyak et al. with the Landau–Lifshitz–Gilbert equation; this method has been widely used for interpreting vast experimental results. The essence of the spin pumping effect is the quantum fluctuation. Then, localized spin degrees of freedom should be quantized, i.e. be treated as magnons not as classical variables. Consequently, the precessing ferromagnet can be regarded as a magnon battery. This point of view will be useful for further progress of spintronics.

Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices

2014 ◽  
Vol 115 (17) ◽  
pp. 17C505 ◽  
Author(s):  
Tatsuya Yamamoto ◽  
Takeshi Seki ◽  
Shimpei Ono ◽  
Koki Takanashi
Keyword(s):  
Spin Pumping ◽  
Pumping Effect
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