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Origin of inverse Rashba-Edelstein effect detected at the Cu/Bi interface using lateral spin valves

AuthorsIsasa, Miren; Martínez-Velarte, María C.; Villamor, Estitxu; Magen, Cesar; Morellón, Luis; Teresa, José María de; Ibarra, M. Ricardo; Vignale, G.; Chulkov, Eugene V. ; Krasovskii, E. E.; Hueso, Luis E.; Casanova, Félix
Issue Date2016
PublisherAmerican Physical Society
CitationPhysical Review B 93(1): 014420 (2016)
AbstractThe spin transport and spin-to-charge current conversion properties of bismuth are investigated using permalloy/copper/bismuth (Py/Cu/Bi) lateral spin valve structures. The spin current is strongly absorbed at the surface of Bi, leading to ultrashort spin-diffusion lengths. A spin-to-charge current conversion is measured, which is attributed to the inverse Rashba-Edelstein effect at the Cu/Bi interface. The spin-current-induced charge current is found to change direction with increasing temperature. A theoretical analysis relates this behavior to the complex spin structure and dispersion of the surface states at the Fermi energy. The understanding of this phenomenon opens novel possibilities to exploit spin-orbit coupling to create, manipulate, and detect spin currents in two-dimensional systems.
DescriptionUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.93.014420
Identifiersdoi: 10.1103/PhysRevB.93.014420
issn: 2469-9950
e-issn: 2469-9969
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(ICMA) Artículos
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