Issue |
Europhys. Lett.
Volume 38, Number 9, June III 1997
|
|
---|---|---|
Page(s) | 681 - 686 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1997-00303-0 | |
Published online | 01 September 2002 |
Coulomb blockade in a quantum wire with long-range interactions
Laboratoire de Physique des Solides, Université
Paris-Sud, Bât. 510, 91405 Orsay, France
Received:
6
January
1997
Accepted:
20
May
1997
We study the transport through two impurities in a one-dimensional quantum wire, taking account of long-range Coulomb interactions. We compute the temperature-dependent conductance G(T). Long-range forces lead to a dramatic increase of weak barrier potentials with decreasing temperature, even on “resonance”. The system thus always reaches a “strong barrier” regime in which only the charge is pinned, contrary to the standard Luttinger liquid. G(T) vanishes faster than any power as T goes to zero. In particular, resonant tunneling is suppressed at zero temperature.
PACS: 71.10.Pm – Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.) / 73.61.-r – Electrical properties of specific thin films and layer structures (multilayers, superlattices, quantum wells, wires, and dots)
© EDP Sciences, 1997
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