Szczegóły publikacji
Opis bibliograficzny
Helical and topological phase detection based on nonlocal conductance measurements in a three-terminal junction / P. WÓJCIK, D. Sticlet, P. SZUMNIAK, M. P. NOWAK // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2021 — vol. 104 iss. 12 art. no. 125410, s. 125410-1–125410-7. — Bibliogr. s. 125410-7. — Publikacja dostępna online od: 2021-09-07
Autorzy (4)
Dane bibliometryczne
| ID BaDAP | 136106 |
|---|---|
| Data dodania do BaDAP | 2021-09-17 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.104.125410 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, B |
Abstract
The helical state is a fundamental prerequisite for many spintronics applications and Majorana zero mode engineering in nanoscopic semiconductors. Its existence in quasi-one-dimensional nanowires was predicted to be detectable as a characteristic reentrant behavior in the conductance, which in a typical two-terminal architecture may be difficult to distinguish from other possible phenomena such as Fabry-Perot oscillations. Here we present an alternative method of helical gap detection free of the mentioned ambiguity, based on the nonlocal conductance measurements in a three-terminal junction. We find that the interplay between the spin-orbit coupling and the perpendicular magnetic field leads to a spin-dependent trajectory of electrons and as a consequence a preferential injection of electrons in one of the arms. This causes a remarkable enhancement of nonlocal conductance in the helical gap regime. We show that this phenomenon can be also used to detect the topological superconducting phase when the junction is partially proximitized by an s-wave superconductor.
