Twist-angle-tunable spin texture in WSe2/graphene van der Waals heterostructures

Twist engineering has emerged as a powerful approach for modulating electronic properties in van der Waals heterostructures. While theoretical works have predicted the modulation of spin texture in graphene-based heterostructures by twist angle, experimental studies are lacking. Here, by performing...

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Detalles Bibliográficos
Autores: Yang, Haozhe, Martín-García, Beatriz, Kimák, Jozef, Schmoranzerová, Eva, Dolan, Eoin, Chi, Zhendong, Gobbi, Marco, Němec, Petr, Hueso, Luis E., Casanova, Félix
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/373937
Acceso en línea:http://hdl.handle.net/10261/373937
Access Level:acceso abierto
Descripción
Sumario:Twist engineering has emerged as a powerful approach for modulating electronic properties in van der Waals heterostructures. While theoretical works have predicted the modulation of spin texture in graphene-based heterostructures by twist angle, experimental studies are lacking. Here, by performing spin precession experiments, we demonstrate tunability of the spin texture and associated spin–charge interconversion with twist angle in WSe2/graphene heterostructures. For specific twist angles, we detect a spin component radial with the electron’s momentum, in addition to the standard orthogonal component. Our results show that the helicity of the spin texture can be reversed by twist angle, highlighting the critical role of the twist angle in the spin–orbit properties of WSe2/graphene heterostructures and paving the way for the development of spin-twistronic devices.

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