Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect

P. Wójcik; A. Bertoni; G. Goldoni

doi:10.1063/1.5082602

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arXiv · 1811.09088

Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect

P. Wójcik·A. Bertoni·G. Goldoni

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Abstract

We report on $\vec{k}\cdot\vec{p}$ calculations of Rashba spin-orbit coupling controlled by external gates in InAs/InAsP core-shell nanowires. We show that charge spilling in the barrier material allows for a stronger symmetry breaking than in homoegenous nano-materials, inducing a specific interface-related contribution to spin-orbit coupling. Our results qualitatively agree with recent experiments [S. Futhemeier \textit{et al.}, Nat. Commun. \textbf{7}, 12413 (2016)] and suggest additional wavefunction engineering strategies to enhance and control spin-orbit coupling.

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P. Wójcik, A. Bertoni, G. Goldoni. 2018-11-22. Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect. https://doi.org/10.1063/1.5082602

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