| Texto completo | |
| Autor(es): |
Mendes, Joaquim B. S.
;
Vieira, Andriele S.
;
Cunha, Rafael O.
;
Ferreira, Sukarno O.
;
dos Reis, Ricardo D.
;
Schmidt, Marcus
;
Nicklas, Michael
;
Rezende, Sergio M.
;
Azevedo, Antonio
Número total de Autores: 9
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ADVANCED MATERIALS INTERFACES; v. 9, n. 36, p. 8-pg., 2022-12-05. |
| Resumo | |
In this paper, spin-to-charge current conversion properties in the Weyl semimetal TaP by means of the inverse Rashba-Edelstein effect (IREE) with the interfacial integration of this quantum material with the ferromagnetic metal Permalloy (Py = Ni81Fe19) are presented. The spin currents are generated in the Py layer by the spin pumping effect (SPE) from microwave-driven ferromagnetic resonance and are detected by a dc voltage along the TaP crystal, at room temperature. A field-symmetric voltage signal is observed without the contamination of asymmetrical lines due to spin rectification effects observed in studies using metallic ferromagnets. The observed voltage is attributed to spin-to-charge current conversion based on the IREE, made possible by the spin-orbit coupling induced intrinsically by the bulk band structure of Weyl semimetals. The measured IREE coefficient lambda(IREE) = (0.30 +/- 0.01) nm is two orders of magnitude larger than in graphene and is comparable to or larger than the values reported for some metallic interfaces and for several topological insulators. (AU) | |
| Processo FAPESP: | 18/00823-0 - Novos estados topológicos da matéria sob condições extremas |
| Beneficiário: | Ricardo Donizeth dos Reis |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |