Szczegóły publikacji
Opis bibliograficzny
Anisotropy of the spin-orbit coupling driven by a magnetic field in InAs nanowires / Paweł WÓJCIK, Andrea Bertoni, Guido Goldoni // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2021 — vol. 103 iss. 8 art. no. 085434, s. 085434-1–085434-12. — Bibliogr. s. 085434-11–085434-12. — Publikacja dostępna online od: 2021-02-23
Autorzy (3)
- AGHWójcik Paweł
- Bertoni Andrea
- Goldoni Guido
Dane bibliometryczne
| ID BaDAP | 132747 |
|---|---|
| Data dodania do BaDAP | 2021-03-03 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.103.085434 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We use the k ⋅ p theory and the envelope function approach to evaluate the Rashba spin-orbit coupling induced in a semiconductor nanowire by a magnetic field at different orientations, taking explicitly into account the prismatic symmetry of typical nanocrystals. We make the case for the strongly spin-orbit-coupled InAs semiconductor nanowires and investigate the anisotropy of the spin-orbit constant with respect to the field direction. At sufficiently high magnetic fields perpendicular to the nanowire, a sixfold anisotropy results from the interplay between the orbital effect of field and the prismatic symmetry of the nanowire. A backgate potential, breaking the native symmetry of the nanocrystal, couples to the magnetic field inducing a twofold anisotropy, with the spin-orbit coupling being maximized or minimized depending on the relative orientation of the two fields. We also investigate in-wire field configurations, which shows a trivial twofold symmetry when the field is rotated off the axis. However, isotropic spin-orbit coupling is restored if a sufficiently high gate potential is applied. Our calculations are shown to agree with recent experimental analysis of the vectorial character of the spin-orbit coupling for the same nanomaterial, providing a microscopic interpretation of the latter.
