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Proceedings Paper

Electrical spin Hall measurement with H-shaped structure of a single metal (Conference Presentation)
Author(s): Dazhi Hou

Paper Abstract

Distinct from all the existing methods for determining the spin Hall angle with bilayers, we have developed a new approach based on the mesoscopic H-shaped structure, which generates and detects pure spin current full electrically in a single metal. Using this approach we have unequivocally addressed the long-standing controversy of the magnitude of the spin Hall angle of gold. By exploiting the long spin diffusion length of Cu and the large spin-orbit coupling of Bi, we have realized a very large spin Hall effect in 10 nm Cu films delta doped with 0.15 nm of Bi. This new artificial material can generate a large spin-orbit torque to switch an adjacent Fe layer. We have thus demonstrated an effective fabrication method for artificial materials with a simultaneously large spin Hall angle and long spin diffusion length.

Paper Details

Date Published: 10 September 2019
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Proc. SPIE 11090, Spintronics XII, 110902I (10 September 2019);
Show Author Affiliations
Dazhi Hou, Tohoku Univ. (Japan)


Published in SPIE Proceedings Vol. 11090:
Spintronics XII
Henri-Jean M. Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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