We report on k → · 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 homogenous nano-materials, inducing a specific interface-related contribution to spin-orbit coupling. Our results suggest additional wavefunction engineering strategies to enhance and control spin-orbit coupling.
Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect / Wójcik, Paweł; Bertoni, Andrea; Goldoni, Guido. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 114:7(2019), pp. 1-5. [10.1063/1.5082602]
Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect
Bertoni, Andrea;Goldoni, Guido
2019
Abstract
We report on k → · 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 homogenous nano-materials, inducing a specific interface-related contribution to spin-orbit coupling. Our results suggest additional wavefunction engineering strategies to enhance and control spin-orbit coupling.
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