Transverse Magnetoconductance in Two-Terminal Chiral Spin-Selective Devices
Metadatos
Mostrar el registro completo del ítemAutor
Hossain, Md. Anik; Illescas Lopez, Sara; Nair, Rahul; Cuerva Carvajal, Juan Manuel; Álvarez Cienfuegos Rodríguez, Luis; Pramanik, SandipanEditorial
RSC
Materia
Chirality-induced spin selectivity Carbon nanotubes Peptide Onsager’s reciprocit Electric magnetochiral anisotropy Spin transport
Fecha
2023Referencia bibliográfica
Nanoscale Horizons
Patrocinador
Project PID2020-118498GB-I00 funded by MCIN/AEI/10.13039/501100011033; Project P18-FR-3533 by FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades (Spain); NFRFE-2019-01298 (New Frontiers in Research Fund - Exploration); NSERC (Natural Sciences and Engineering Research Council of Canada), project RGPIN-2018-05127Resumen
The phenomenon of chirality induced spin selectivity (CISS) has triggered significant activity in recent years, although many aspects of it remain to be understood. For example, most investigations are focused on spin polarizations collinear to the charge current, and hence longitudinal magnetoconductance (MC) is commonly studied in two-terminal transport experiments. Very little is known about the transverse spin components and transverse MC – their existence, as well as any dependence of this component on chirality. Further, measurement of the CISS effect via two-terminal MC experiments remains a controversial topic. Detection of this effect in the linear response regime is debated, with contradicting reports in the literature. Finally, potential influence of the well-known electric magnetochiral effect on CISS remains unclear. To shed light on these issues, in this work we have investigated the bias dependence of the CISS effect using planar carbon nanotube networks functionalized with chiral molecules. We find that (a) transverse MC exists and exhibits tell-tale signs of the CISS effect, (b) transverse CISS MC vanishes in the linear response regime establishing the validity of Onsager’s relation in two-terminal CISS systems, and finally (c) CISS signal remains present even in the absence of electric magneto chiral effects, suggesting existence of an alternative physical origin of CISS MC.