Positive cross correlations in a three-terminal quantum dot with ferromagnetic contacts

Cottet, Audrey; Belzig, Wolfgang; Bruder, Christoph

Positive cross correlations in a three-terminal quantum dot with ferromagnetic contacts

Dateien

Positive_cross_correlations_in_a_three_terminal_quantum_dot_with_ferromagnetic_contacts.pdfGröße: 256.42 KBDownloads: 321

Datum

2004

Autor:innen

Cottet, Audrey

Belzig, Wolfgang

Bruder, Christoph

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. 2004, 92, 206801. Available under: doi: 10.1103/PhysRevLett.92.206801

Zusammenfassung

We study current fluctuations in an interacting three-terminal quantum dot with ferromagnetic leads. For appropriately polarized contacts, the transport through the dot is governed by dynamical spin blockade, i.e., a spin-dependent bunching of tunneling events not present in the paramagnetic case. This leads, for instance, to positive zero-frequency cross correlations of the currents in the output leads even in the absence of spin accumulation on the dot. We include the influence of spin-flip scattering and identify favorable conditions for the experimental observation of this effect with respect to polarization of the contacts and tunneling rates.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

COTTET, Audrey, Wolfgang BELZIG, Christoph BRUDER, 2004. Positive cross correlations in a three-terminal quantum dot with ferromagnetic contacts. In: Physical Review Letters. 2004, 92, 206801. Available under: doi: 10.1103/PhysRevLett.92.206801

BibTex

@article{Cottet2004Posit-9324,
  year={2004},
  doi={10.1103/PhysRevLett.92.206801},
  title={Positive cross correlations in a three-terminal quantum dot with ferromagnetic contacts},
  volume={92},
  journal={Physical Review Letters},
  author={Cottet, Audrey and Belzig, Wolfgang and Bruder, Christoph},
  note={Article Number: 206801}
}

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