Molecular Functionalization and Emergence of Long-range Spin-dependent Phenomena in Two-dimensional (2D) Carbon Nanotube Networks
Metadatos
Mostrar el registro completo del ítemAutor
Rahman, Md. Wazedur; Mañas Torres, María del Carmen; Firouzeh, Seyedamin; Cuerva Carvajal, Juan Manuel; Álvarez Cienfuegos Rodríguez, Luis; Pramanik, SandipanEditorial
ACS
Materia
Chirality-induced spin selectivity Carrier transport Carbon nanotube Peptides Spin−orbit coupling
Fecha
2021-12-06Referencia bibliográfica
ACS Nano 2021, 15, 20056−20066
Patrocinador
Project FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades (Spain) project P18-FR- 3533; Grant PRE 2018-083773, funded by MCIN/AEI/10.13039/501100011033Resumen
Molecular functionalization of CNTs is a routine procedure in
the field of nanotechnology. However, whether and how these molecules affect
the spin polarization of the charge carriers in CNTs are largely unknown. In
this work we demonstrate that spin polarization can indeed be induced in twodimensional
(2D) CNT networks by “certain” molecules and the spin signal
routinely survives length scales significantly exceeding 1 μm. This result
effectively connects the area of molecular spintronics with that of carbon-based
2D nanoelectronics. By using the versatility of peptide chemistry, we further
demonstrate how spin polarization depends on molecular structural features
such as chirality as well as molecule−nanotube interactions. A chiralityindependent
effect was detected in addition to the more common chiralitydependent
effect, and the overall spin signal was found to be a combination of
both. Finally, the magnetic field dependence of the spin signals has been
explored, and the “chirality-dependent” signal has been found to exist only in
certain field angles.