Electronic structure of full-shell InAs/Al hybrid semiconductor-superconductor nanowires: Spin-orbit coupling and topological phase space
Benjamin D. Woods, Sankar Das Sarma, Tudor D. Stanescu
DOI 10.1103/PhysRevB.99.161118 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study the electronic structure of full-shell superconductor-semiconductor nanowires, which have recently been proposed for creating Majorana zero modes, using an eight-band k⃗·p⃗ model within a fully self-consistent Schrödinger-Poisson scheme. We find that the spin-orbit coupling induced by the intrinsic radial electric field is generically weak for subbands with their minimum near the Fermi energy. Furthermore, we show that the chemical potential windows consistent with the emergence of a topological phase are small and sparse and can only be reached by fine-tuning the diameter of the wire. These findings suggest that the parameter space consistent with the realization of a topological phase in full-shell InAs/Al nanowires is, at best, very narrow.
Similar papers
Dimensional crossover in spin-orbit-coupled semiconductor nanowires with induced superconducting pairing
similarity 0.92Tudor D. Stanescu et al.
Source status unknown — claims are unverified
Finite-size effects in a nanowire strongly coupled to a thin superconducting shell
similarity 0.91Christopher Reeg et al.
Source status unknown — claims are unverified
Current-phase relations of InAs nanowire Josephson junctions: From interacting to multimode regimes
similarity 0.90Sean Hart et al.
Source status unknown — claims are unverified
Spin-Split Superconductivity in Spin-Orbit Coupled Hybrid Nanowires with Ferromagnetic Barriers
similarity 0.90J. Zhao et al.
Source status unknown — claims are unverified
Majorana bound states in hybrid two-dimensional Josephson junctions with ferromagnetic insulators
similarity 0.89P. Virtanen et al.
Source status unknown — claims are unverified
Spin Orbit coupling and Anomalous Josephson effect in Nanowires
similarity 0.88G. Campagnano et al. · 2014 · arXiv:1408.3953
Source status unknown — claims are unverified