Clocked single-spin source based on a spin-split superconductor
Artikel i vetenskaplig tidskrift, 2016

We propose an accurate clocked single-spin source for ac-spintronic applications. Our device consists of a superconducting island covered by a ferromagnetic insulator (FI) layer through which it is coupled to superconducting leads. Single-particle transfer relies on the energy gaps and the island's charging energy, and is enabled by a bias and a time-periodic gate voltage. Accurate spin transfer is achieved by the FI layer which polarizes the island, provides spin-selective tunneling barriers and improves the precision by suppressing Andreev reflection. We analyze realistic material combinations and experimental requirements which allow for a clocked spin current in the MHz regime. © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Superconducting spintronics

Turnstile

Quasiparticle transport

Superconducting single-electron transistor

Författare

Niklas Dittmann

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Janine Splettstoesser

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Francesco Giazotto

Scuola Normale Superiore di Pisa

New Journal of Physics

1367-2630 (ISSN)

Vol. 18 8 Article Number: 083019 - 083019

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Nanoteknik

Den kondenserade materiens fysik

DOI

10.1088/1367-2630/18/8/083019