Roadmap for the Design of All Ferromagnetic Four-Terminal Spin Valves and the Extraction of Spin Diffusion Length

We report the successful fabrication of lateral organic spin valves (OSVs) using polycrystalline pentacene as spacer and half-metallic La 0.7 Sr 0.3 MnO 3 (LSMO) as two electrodes. The distance between two electrodes ranges from 30 nm to 100 nm. The current–voltage characteristics follow the power law relation, which are attributed to the space charge limited current behavior. The devices with a spacing of 30 nm exhibits clear spin-valve characteristics with a magnetoresistance (MR) ratio of ~ 2% at 9 K. The MR effects disappear for electrode spacing about 100 nm, suggesting that the spin diffusion length is less than 100 nm.

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Experimental estimation of the spin diffusion length in undoped p-Ge on Fe3Si using vertical spin-valve devices

Journal of Applied Physics ◽

10.1063/5.0035323 ◽

2021 ◽

Vol 129 (1) ◽

pp. 013901

Author(s):

A. Yamada ◽

M. Yamada ◽

T. Shiihara ◽

M. Ikawa ◽

S. Yamada ◽

...

Keyword(s):

Spin Diffusion ◽

Diffusion Length ◽

Spin Valve ◽

Experimental Estimation ◽

Spin Diffusion Length

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Self-consistent determination of spin Hall angle and spin diffusion length in Pt and Pd: The role of the interface spin loss

Science Advances ◽

10.1126/sciadv.aat1670 ◽

2018 ◽

Vol 4 (6) ◽

pp. eaat1670 ◽

Cited By ~ 60

Author(s):

Xinde Tao ◽

Qi Liu ◽

Bingfeng Miao ◽

Rui Yu ◽

Zheng Feng ◽

...

Keyword(s):

Spin Diffusion ◽

Diffusion Length ◽

Self Consistent ◽

Hall Angle ◽

Spin Diffusion Length

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Long Spin Diffusion Length in Few-Layer Graphene Flakes

Physical Review Letters ◽

10.1103/physrevlett.117.147201 ◽

2016 ◽

Vol 117 (14) ◽

Cited By ~ 22

Author(s):

W. Yan ◽

L. C. Phillips ◽

M. Barbone ◽

S. J. Hämäläinen ◽

A. Lombardo ◽

...

Keyword(s):

Spin Diffusion ◽

Diffusion Length ◽

Layer Graphene ◽

Graphene Flakes ◽

Spin Diffusion Length ◽

Few Layer Graphene

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Spin Torque Study of the Spin Hall Conductivity and Spin Diffusion Length in Platinum Thin Films with Varying Resistivity

Physical Review Letters ◽

10.1103/physrevlett.116.126601 ◽

2016 ◽

Vol 116 (12) ◽

Cited By ~ 188

Author(s):

Minh-Hai Nguyen ◽

D. C. Ralph ◽

R. A. Buhrman

Keyword(s):

Thin Films ◽

Spin Diffusion ◽

Diffusion Length ◽

Hall Conductivity ◽

Spin Torque ◽

Spin Diffusion Length ◽

Spin Hall Conductivity

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.508.266 ◽

2012 ◽

Vol 508 ◽

pp. 266-270 ◽

Cited By ~ 9

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.

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