Chiral spin channels in curved graphene pn junctions
Bercioux, D., Frustaglia, D. & De Martino, A. 
ORCID: 0000-0002-3656-0419 (2023).
Chiral spin channels in curved graphene pn junctions.
Physical Review B, 108(11),
article number 115140.
doi: 10.1103/physrevb.108.115140
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 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.
| Publication Type: | Article |
|---|---|
| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
| Departments: | School of Science & Technology > Mathematics |
| SWORD Depositor: |
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