Electronic transport through a contact of a correlated quantum wire with leads of higher dimension

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 V_T, while above V_T 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 ≅ ℏV_F/eV_T and at high temperatures T > T₀ ≅ eV_T/k_B the effect is destroyed by fluctuations.

Original language	English
Pages (from-to)	589-593
Number of pages	5
Journal	JETP Letters
Volume	91
Issue number	11
DOIs	https://doi.org/10.1134/S002136401011010X
Publication status	Published - 11 Aug 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Electronic transport through a contact of a correlated quantum wire with leads of higher dimension",

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.",

author = "Artemenko, {S. N.} and Aseev, {P. P.} and Shapiro, {D. S.}",

year = "2010",

month = aug,

day = "11",

doi = "10.1134/S002136401011010X",

language = "English",

volume = "91",

pages = "589--593",

journal = "JETP Letters",

issn = "0021-3640",

publisher = "Maik Nauka-Interperiodica Publishing",

number = "11",

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TY - JOUR

T1 - Electronic transport through a contact of a correlated quantum wire with leads of higher dimension

AU - Artemenko, S. N.

AU - Aseev, P. P.

AU - Shapiro, D. S.

PY - 2010/8/11

Y1 - 2010/8/11

N2 - 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.

AB - 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.

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EP - 593

JO - JETP Letters

JF - JETP Letters

SN - 0021-3640

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