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Phys. Rev. B 74, 125309 (2006) [5 pages]

Conductance reduction without shot noise in quantum wires

M. Kindermann and P. W. Brouwer
Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853-2501, USA
Received 9 May 2006; published 15 September 2006

We show that a noiseless current is possible in quantum wires with conductance e2/h. This unusual behavior is found for ultrathin quantum wires where interactions render the conduction electrons effectively impenetrable. The current is carried by electrons of both spin directions. We study charge and spin transport through such a wire when coupled to bulk leads in two exactly solvable limits: a large applied bias and fast spin relaxation.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.74.125309
DOI: 10.1103/PhysRevB.74.125309
PACS: 73.63.Nm; 72.70.+m; 73.21.Hb
  • 73.63.Nm
    Quantum wires (electronic transport)
  • 72.70.+m
    Noise processes and phenomena in electronic transport
  • 73.21.Hb
    Quantum wires (electron states/collective excitations)
  • YEAR: 2006
KEYWORDS: quantum wires, shot noise, electric admittance, spin polarised transport

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