001     1009108
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024 7 _ |a 10.1038/s41586-023-06101-9
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024 7 _ |a 0028-0836
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024 7 _ |a 1476-4687
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024 7 _ |a 10.34734/FZJ-2023-02639
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024 7 _ |a 37407680
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037 _ _ |a FZJ-2023-02639
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100 1 _ |a Choi, Young-Gwan
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245 _ _ |a Observation of the orbital Hall effect in a light metal Ti
260 _ _ |a London [u.a.]
|c 2023
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520 _ _ |a The orbital Hall effect1 refers to the generation of electron orbital angular momentum flow transverse to an external electric field. Contrary to the common belief that the orbital angular momentum is quenched in solids, theoretical studies2,3 predict that the orbital Hall effect can be strong and is a fundamental origin of the spin Hall effect4,5,6,7 in many transition metals. Despite the growing circumstantial evidence8,9,10,11, its direct detection remains elusive. Here we report the magneto-optical observation of the orbital Hall effect in the light metal titanium (Ti). The Kerr rotation by the orbital magnetic moment accumulated at Ti surfaces owing to the orbital Hall current is measured, and the result agrees with theoretical calculations semi-quantitatively and is supported by the orbital torque12 measurement in Ti-based magnetic heterostructures. This result confirms the orbital Hall effect and indicates that the orbital angular momentum is an important dynamic degree of freedom in solids. Moreover, this calls for renewed studies of the orbital effect on other degrees of freedom such as spin2,3,13,14, valley15,16, phonon17,18,19 and magnon20,21 dynamics.
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700 1 _ |a Jo, Daegeun
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700 1 _ |a Ko, Kyung-Hun
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700 1 _ |a Go, Dongwook
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700 1 _ |a Kim, Kyung-Han
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700 1 _ |a Park, Hee Gyum
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700 1 _ |a Kim, Changyoung
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700 1 _ |a Min, Byoung-Chul
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700 1 _ |a Choi, Gyung-Min
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700 1 _ |a Lee, Hyun-Woo
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773 _ _ |a 10.1038/s41586-023-06101-9
|g Vol. 619, no. 7968, p. 52 - 56
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856 4 _ |u https://juser.fz-juelich.de/record/1009108/files/s41586-023-06101-9-1.pdf
856 4 _ |y OpenAccess
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910 1 _ |a Department of Energy Science, Sungkyunkwan University, Suwon, Korea
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910 1 _ |a Department of Physics, Pohang University of Science and Technology, Pohang, Korea
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910 1 _ |a Department of Energy Science, Sungkyunkwan University, Suwon, Korea
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910 1 _ |a Forschungszentrum Jülich
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910 1 _ |a Department of Physics, Pohang University of Science and Technology, Pohang, Korea
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910 1 _ |a Center for Spintronics, Korea Institute of Science and Technology, Seoul, Korea
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910 1 _ |a Department of Physics and Astronomy, Seoul National University, Seoul, Korea
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910 1 _ |a Center for Correlated Electron Systems, Institute for Basic Science, Seoul, Korea
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910 1 _ |a Center for Integrated Nanostructure Physics, Institute for Basic Science, Suwon, Korea
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910 1 _ |a Department of Physics, Pohang University of Science and Technology, Pohang, Korea
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910 1 _ |a Asia Pacific Center for Theoretical Physics, Pohang, Korea
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