Scanning tunneling microscopy measurements of the spin Hall effect in tungsten films by using iron-coated tungsten tips

Ting Xie; Michael Dreyer; David Bowen; Dan Hinkel; R. E. Butera; Charles Krafft; Isaak Mayergoyz

doi:10.1063/1.5006478

AIP Advances (May 2018)

Scanning tunneling microscopy measurements of the spin Hall effect in tungsten films by using iron-coated tungsten tips

Ting Xie,
Michael Dreyer,
David Bowen,
Dan Hinkel,
R. E. Butera,
Charles Krafft,
Isaak Mayergoyz

Affiliations

Ting Xie: Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA
Michael Dreyer: Department of Physics, University of Maryland, College Park, Maryland 20742, USA
David Bowen: Laboratory for Physical Sciences, College Park, Maryland, 20740, USA
Dan Hinkel: Laboratory for Physical Sciences, College Park, Maryland, 20740, USA
R. E. Butera: Laboratory for Physical Sciences, College Park, Maryland, 20740, USA
Charles Krafft: Laboratory for Physical Sciences, College Park, Maryland, 20740, USA
Isaak Mayergoyz: Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA

DOI: https://doi.org/10.1063/1.5006478
Journal volume & issue: Vol. 8, no. 5
pp. 055914 – 055914-5

Abstract

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Scanning tunneling microscopy experiments using iron-coated tungsten tips and current-carrying tungsten films have been conducted. An asymmetry of the tunneling current with respect to the change of the direction of the bias current through a tungsten film has been observed. It is argued that this asymmetry is a manifestation of the spin Hall effect in the current-carrying tungsten film. Nanoscale variations of this asymmetry across the tungsten film have been studied by using the scanning tunneling microscopy technique.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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