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Title: Efficient room temperature spin-Hall injection across an oxide barrier

Abstract

Spin Hall injection is demonstrated at room temperature using Pt metal and AlO{sub x} barriers. A substantial spin accumulation, comparable to that of a magnetic spin injection, is transferred into a mesoscopic Cu wire from an adjacent Pt wire across an AlO{sub x} barrier. The Pt spin Hall angle is 0.030 ± 0.007 when assuming a Pt spin diffusion length λ{sub pt} > 6 nm and 0.09 ± 0.02 when assuming λ{sub pt} = 2 nm. Nearly (66 ± 6)% of the spin accumulation on the Pt surface is transferred into the Cu across the AlO{sub x}, enabling an efficient spin Hall injection scheme.

Authors:
; ;  [1]
  1. Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)
Publication Date:
OSTI Identifier:
22310958
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; COPPER; DIFFUSION BARRIERS; DIFFUSION LENGTH; INJECTION; METALS; OXIDES; PLATINUM; SPIN; SURFACES; TEMPERATURE RANGE 0273-0400 K; WIRES

Citation Formats

Chen, Shuhan, Qin, Chuan, and Ji, Yi, E-mail: yji@physics.udel.edu. Efficient room temperature spin-Hall injection across an oxide barrier. United States: N. p., 2014. Web. doi:10.1063/1.4894104.
Chen, Shuhan, Qin, Chuan, & Ji, Yi, E-mail: yji@physics.udel.edu. Efficient room temperature spin-Hall injection across an oxide barrier. United States. doi:10.1063/1.4894104.
Chen, Shuhan, Qin, Chuan, and Ji, Yi, E-mail: yji@physics.udel.edu. Mon . "Efficient room temperature spin-Hall injection across an oxide barrier". United States. doi:10.1063/1.4894104.
@article{osti_22310958,
title = {Efficient room temperature spin-Hall injection across an oxide barrier},
author = {Chen, Shuhan and Qin, Chuan and Ji, Yi, E-mail: yji@physics.udel.edu},
abstractNote = {Spin Hall injection is demonstrated at room temperature using Pt metal and AlO{sub x} barriers. A substantial spin accumulation, comparable to that of a magnetic spin injection, is transferred into a mesoscopic Cu wire from an adjacent Pt wire across an AlO{sub x} barrier. The Pt spin Hall angle is 0.030 ± 0.007 when assuming a Pt spin diffusion length λ{sub pt} > 6 nm and 0.09 ± 0.02 when assuming λ{sub pt} = 2 nm. Nearly (66 ± 6)% of the spin accumulation on the Pt surface is transferred into the Cu across the AlO{sub x}, enabling an efficient spin Hall injection scheme.},
doi = {10.1063/1.4894104},
journal = {Applied Physics Letters},
number = 8,
volume = 105,
place = {United States},
year = {Mon Aug 25 00:00:00 EDT 2014},
month = {Mon Aug 25 00:00:00 EDT 2014}
}