Spin transport in a graphene normal-superconductor junction in the quantum Hall regime

Autor:	Sekera, Tibor, Bruder, Christoph, Tiwari, Rakesh P.
Rok vydání:	2018
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 98, 195418 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.98.195418
Popis:	The quantum Hall regime of graphene has many unusual properties. In particular, the presence of a Zeeman field opens up a region of energy within the zeroth Landau level, where the spin-up and spin-down states localized at a single edge propagate in opposite directions. We show that when these edge states are coupled to an s-wave superconductor, the transport of charge carriers is spin-filtered. This spin-filtering effect can be traced back to the interplay of specular Andreev reflections and Andreev retro-reflections in the presence of a Zeeman field. Comment: 6 pages, 7 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1807.06975 Zobrazit plný text záznamu View this record from Arxiv