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Magneto-Optical Detection of the Orbital Hall Effect in Chromium
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- Lyalin, Igor (author)
- Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
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- Alikhah, Sanaz (author)
- Uppsala universitet,Materialteori
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- Berritta, Marco (author)
- Uppsala universitet,Materialteori,Univ Exeter, Dept Phys & Astron, Stocker Rd, Exeter EX4 4QL, England.
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- Ohio State Univ, Dept Phys, Columbus, OH 43210 USA Materialteori (creator_code:org_t)
- American Physical Society, 2023
- 2023
- English.
- In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 131:15
- Journal article (peer-reviewed)
Abstract
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- The orbital Hall effect has been theoretically predicted but its direct observation is a challenge. Here, we report the magneto-optical detection of current-induced orbital accumulation at the surface of a light 3d transition metal, Cr. The orbital polarization is in-plane, transverse to the current direction, and scales linearly with current density, consistent with the orbital Hall effect. Comparing the thickness-dependent magneto-optical measurements with ab initio calculations, we estimate an orbital diffusion length in Cr of 6.6 +/- 0.6nm.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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