Artículo
Chiral spin channels in curved graphene pn junctions
Autor/es | Bercioux, Dario
Frustaglia, Diego César De Martino, Alessandro |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada II |
Fecha de publicación | 2023-09-20 |
Fecha de depósito | 2023-10-17 |
Publicado en |
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Resumen | We show that the chiral modes in circular graphene pn junctions provide an advantage for spin manipulation via spin-orbit coupling compared to semiconductor platforms. We derive the effective Hamiltonian for the spin ... We show that the chiral modes in circular graphene pn junctions provide an advantage for spin manipulation via spin-orbit coupling compared to semiconductor platforms. We derive the effective Hamiltonian for the spin dynamics of the junction's zero modes and calculate their quantum phases. We find a sweet spot in parameter space where the spin is fully in-plane and radially polarized for a given junction polarity. This represents a shortcut to singular spin configurations that would otherwise require spin-orbit coupling strengths beyond experimental reach. |
Agencias financiadoras | Ministerio de Ciencia, Innovación y Universidades (MICINN). España Gobierno Vasco Junta de Andalucía European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | PID2020-120614GB-I00
QUAN-000021-01 PID2021-127250NB-I00 P20-00548 US1380932 |
Cita | Bercioux, D., Frustaglia, D.C. y De Martino, A. (2023). Chiral spin channels in curved graphene pn junctions. Physical Review B, 108 (115140). https://doi.org/10.1103/PhysRevB.108.115140. |
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