Study on spin current transmission of Co1-x Tb x films

Abstract We investigate the spin to charge conversion phenomena in Y3Fe5O12/Pt/Co1-x Tb x /Pt multilayers by both the spin pumping and spin Seebeck effects. We find that the spin transport efficiency is irrelevant to magnetization states of the perpendicular magnetized Co1-x Tb x films, which can be attributed to the symmetry requirement of the inverse transverse spin Hall effect. Furthermore, the spin transmission efficiency is significantly affected by the film concentration, revealing the dominant role of extrinsic impurity scattering caused by Tb impurity. The present results provide further guidance for enhancing the spin transport efficiency and developing spintronics devices.

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Determination of Penetration Depth of Transverse Spin Current in Ferromagnetic Metals by Spin Pumping

Applied Physics Express ◽

10.1143/apex.1.031302 ◽

2008 ◽

Vol 1 ◽

pp. 031302 ◽

Cited By ~ 34

Author(s):

Tomohiro Taniguchi ◽

Satoshi Yakata ◽

Hiroshi Imamura ◽

Yasuo Ando

Keyword(s):

Penetration Depth ◽

Spin Current ◽

Transverse Spin ◽

Spin Pumping ◽

Ferromagnetic Metals

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SPIN PUMPING IN FERROMAGNETIC MULTILAYERS

Modern Physics Letters B ◽

10.1142/s0217984908017436 ◽

2008 ◽

Vol 22 (30) ◽

pp. 2909-2929 ◽

Cited By ~ 4

Author(s):

TOMOHIRO TANIGUCHI ◽

HIROSHI IMAMURA

Keyword(s):

Line Width ◽

Ferromagnetic Resonance ◽

Metal Layer ◽

Spin Current ◽

Theoretical Models ◽

Ferromagnetic Metal ◽

Transverse Spin ◽

Spin Pumping ◽

Ferromagnetic Metals ◽

Penetration Depths

We present a brief review of our recent study on spin pumping in ferromagnetic multilayers. First, we present theoretical models describing spin pumping induced by ferromagnetic resonance (FMR). Then we apply the spin-pumping theory to FMR in ferromagnetic multilayers and show that the line width of the FMR spectrum depends on the thickness of the ferromagnetic metal layer which is not in resonance. We also show that the penetration depths of transverse spin current in ferromagnetic metals can be determined by analyzing the line width of the FMR spectrum. The obtained penetration depths of the transverse spin current were 3.7 nm for Py , 2.5 nm for CoFe , 12.0 nm for CoFeB , and 1.7 nm for Co , respectively.

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Spin-relaxation modulation and spin-pumping control by transverse spin-wave spin current in Y3Fe5O12

Applied Physics Letters ◽

10.1063/1.4817076 ◽

2013 ◽

Vol 103 (5) ◽

pp. 052404 ◽

Cited By ~ 6

Author(s):

Y. Kajiwara ◽

K. Uchida ◽

D. Kikuchi ◽

T. An ◽

Y. Fujikawa ◽

...

Keyword(s):

Spin Wave ◽

Spin Relaxation ◽

Spin Current ◽

Transverse Spin ◽

Spin Pumping

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Spin current distribution in antiferromagnetic zigzag graphene nanoribbons under transverse electric fields

Scientific Reports ◽

10.1038/s41598-021-96636-6 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Jie Zhang ◽

Eric P. Fahrenthold

Keyword(s):

Electric Fields ◽

Transverse Electric ◽

Graphene Nanoribbons ◽

Spin Current ◽

Differential Resistance ◽

Current Control ◽

Field Analysis ◽

Current Transmission ◽

Transverse Electric Fields ◽

Zigzag Graphene Nanoribbons

AbstractThe spin current transmission properties of narrow zigzag graphene nanoribbons (zGNRs) have been the focus of much computational research, investigating the potential application of zGNRs in spintronic devices. Doping, fuctionalization, edge modification, and external electric fields have been studied as methods for spin current control, and the performance of zGNRs initialized in both ferromagnetic and antiferromagnetic spin states has been modeled. Recent work has shown that precise fabrication of narrow zGNRs is possible, and has addressed long debated questions on their magnetic order and stability. This work has revived interest in the application of antiferromagnetic zGNR configurations in spintronics. A general ab initio analysis of narrow antiferromagnetic zGNR performance under a combination of bias voltage and transverse electric field loading shows that their current transmission characteristics differ sharply from those of their ferromagnetic counterparts. At relatively modest field strengths, both majority and minority spin currents react strongly to the applied field. Analysis of band gaps and current transmission pathways explains the presence of negative differential resistance effects and the development of spatially periodic electron transport structures in these nanoribbons.

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Long-distance spin current transmission in single-crystalline NiO thin films

Applied Physics Express ◽

10.35848/1882-0786/ac3575 ◽

2021 ◽

Author(s):

Tetsuya Ikebuchi ◽

Yuta Kobayashi ◽

Itaru Sugiura ◽

Yoichi Shiota ◽

Teruo ONO ◽

...

Keyword(s):

Thin Films ◽

Spin Current ◽

Long Distance ◽

Single Crystalline ◽

Current Transmission

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Spin current study of spin glass AgMn using spin pumping effect

Journal of Physics Conference Series ◽

10.1088/1742-6596/266/1/012089 ◽

2011 ◽

Vol 266 ◽

pp. 012089 ◽

Cited By ~ 6

Author(s):

R Iguchi ◽

K Ando ◽

E Saitoh ◽

T Sato

Keyword(s):

Spin Glass ◽

Spin Current ◽

Spin Pumping ◽

Pumping Effect

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Spin transport and spin dynamics in antiferromagnets

10.33612/diss.157444391 ◽

2021 ◽

Author(s):

◽

Geert Hoogeboom

Keyword(s):

Magnetic Field ◽

Heavy Metal ◽

Spin Transport ◽

Spin Dynamics ◽

Magnetic Moments ◽

Spin Current ◽

Active Role ◽

Metal Films ◽

Alternating Direction ◽

High Processing

Ferromagnets (FMs) have been a key ingredient in information technology because it is easy to manipulate and read out the magnetization. Antiferromagnets (AFMs) have magnetic moments with alternating direction resulting in negligible magnetization. This gives them high processing and device downscaling features, but this also makes it challenging to manipulate and interact with the AFM order. This thesis studies this interaction with antiferromagnets. NiO AFM order has been read out by electrically injecting spin current via the spin Hall effect in thin heavy metal films. In DyFeO3, both Dy and Fe magnetic moments, their excitation and interaction have been probed. A magnetic field lifts the degeneracy of magnetic excitations with opposite magnon spin, allowing a spin current to be detected nonlocally. The AFM order and the generation of spin current can easily be controlled by an adjacent FM. Thereby, we show that AFMs have the potential to play an active role in spintronics.

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