Abstract
We study theoretically electronic transport through a contact of a quantum wire with 2D or 3D leads and find that if the contact is not smooth and adiabatic then the conduction is strongly suppressed below a threshold voltage VT, while above VT the dc current Ī is accompanied by coherent oscillations of frequency f = Ī/e. The effect is related to interelectronic repulsion and interaction of dc current with the Friedel oscillations near a sharp contact. In short conducting channels of length L < L0 ≅ ℏVF/eVT and at high temperatures T > T0 ≅ eVT/kB the effect is destroyed by fluctuations.
Original language | English |
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Pages (from-to) | 589-593 |
Number of pages | 5 |
Journal | JETP Letters |
Volume | 91 |
Issue number | 11 |
DOIs | |
Publication status | Published - 11 Aug 2010 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)