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

Isasa, M. ; Martínez-Velarte, M.C. (Universidad de Zaragoza) ; Villamor, E. ; Magén, C. (Universidad de Zaragoza) ; Morellón, L. (Universidad de Zaragoza) ; De Teresa, J.M. (Universidad de Zaragoza) ; Ibarra, M.R. (Universidad de Zaragoza) ; Vignale, G. ; Chulkov, E.V. ; Krasovskii, E.E. ; Hueso, L.E. ; Casanova, F.

Resumen: The 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.

Idioma: Inglés

DOI: 10.1103/PhysRevB.93.014420

Año: 2016

Publicado en: Physical Review B. Condensed Matter and Materials Physics 93, 1 (2016), 014420[6 pp]
ISSN: 1098-0121

Factor impacto JCR: 3.836 (2016)

Categ. JCR: PHYSICS, CONDENSED MATTER rank: 18 / 67 = 0.269 (2016) - Q2 - T1

Factor impacto SCIMAGO: 2.339 - Electronic, Optical and Magnetic Materials (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E26
Financiación: info:eu-repo/grantAgreement/EC/FP7/256470/EU/Injection, transport and manipulation of spin currents in new organic materials/ITAMOSCINOM
Financiación: info:eu-repo/grantAgreement/EC/FP7/257654/EU/Spin Transport in Organic Semiconductors/SPINTROS
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2013-48286-C2-1-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-13099-E
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27553-C02
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2012-37638
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-51982-C2-1-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-69725-REDT
Financiación: info:eu-repo/grantAgreement/EUR/TRAIN2/SOE2-P1-E-280

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)