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Observation of the orbital Hall effect in a light metal Ti - Nature
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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 effect4–7 in many transition metals. Despite the growing circumstantial evidence8–11, its direct detection remains elusive.
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