Article
Chiral spin channels in curved graphene pn junctions
Author/s | Bercioux, Dario
Frustaglia, Diego César De Martino, Alessandro |
Department | Universidad de Sevilla. Departamento de Física Aplicada II |
Publication Date | 2023-09-20 |
Deposit Date | 2023-10-17 |
Published in |
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Abstract | 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. |
Funding agencies | Ministerio de Ciencia, Innovación y Universidades (MICINN). España Gobierno Vasco Junta de Andalucía European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Project ID. | PID2020-120614GB-I00
QUAN-000021-01 PID2021-127250NB-I00 P20-00548 US1380932 |
Citation | 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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