Quantum Dot as Spin Filter and Spin Memory

Patrik Recher, Eugene V. Sukhorukov, and Daniel Loss
Phys. Rev. Lett. 85, 1962 – Published 28 August 2000
PDFExport Citation

Abstract

We consider a quantum dot in the Coulomb blockade regime weakly coupled to current leads and show that in the presence of a magnetic field it acts as an efficient spin filter (at the single-spin level), producing a spin-polarized current. Conversely, if the leads are fully spin polarized the up or the down state of the spin on the dot results in a large sequential or a small cotunneling current, and, thus, together with ESR techniques, the setup can be operated as a single-spin memory.

  • Received 6 March 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.1962

©2000 American Physical Society

Authors & Affiliations

Patrik Recher, Eugene V. Sukhorukov, and Daniel Loss

  • Department of Physics and Astronomy, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland

References (Subscription Required)

Click to Expand
Issue

Vol. 85, Iss. 9 — 28 August 2000

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×