Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot

Pascal Simon; O. Entin-Wohlman; A. Aharony

doi:10.1103/PhysRevB.72.245313

Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot

Pascal Simon, O. Entin-Wohlman, A. Aharony

Department of Physics

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

An Aharonov-Bohm interferometer (ABI) carrying a quantum dot on one of its arms is analyzed. It is found that the Kondo temperature of the device may depend strongly on the magnetic flux penetrating the ring. As a result, mesoscopic finite-size effects appear leading to plateaus in the finite-temperature conductance as function of the flux. The possibility to deduce the transmission phase shift of the quantum dot from measurements of the ABI conductance when it is opened (i.e., is connected to more than two leads) is examined, leading to the conclusion that finite-size effects, when significant, may hinder the detection of the Kondo phase shift.

Original language	English
Article number	245313
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.72.245313
State	Published - 15 Dec 2005

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.72.245313

Cite this

@article{533bb5e0b8764a2f80cb3bda6cab03e6,

title = "Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot",

abstract = "An Aharonov-Bohm interferometer (ABI) carrying a quantum dot on one of its arms is analyzed. It is found that the Kondo temperature of the device may depend strongly on the magnetic flux penetrating the ring. As a result, mesoscopic finite-size effects appear leading to plateaus in the finite-temperature conductance as function of the flux. The possibility to deduce the transmission phase shift of the quantum dot from measurements of the ABI conductance when it is opened (i.e., is connected to more than two leads) is examined, leading to the conclusion that finite-size effects, when significant, may hinder the detection of the Kondo phase shift.",

author = "Pascal Simon and O. Entin-Wohlman and A. Aharony",

year = "2005",

month = dec,

day = "15",

doi = "10.1103/PhysRevB.72.245313",

language = "English",

volume = "72",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot

AU - Simon, Pascal

AU - Entin-Wohlman, O.

AU - Aharony, A.

PY - 2005/12/15

Y1 - 2005/12/15

N2 - An Aharonov-Bohm interferometer (ABI) carrying a quantum dot on one of its arms is analyzed. It is found that the Kondo temperature of the device may depend strongly on the magnetic flux penetrating the ring. As a result, mesoscopic finite-size effects appear leading to plateaus in the finite-temperature conductance as function of the flux. The possibility to deduce the transmission phase shift of the quantum dot from measurements of the ABI conductance when it is opened (i.e., is connected to more than two leads) is examined, leading to the conclusion that finite-size effects, when significant, may hinder the detection of the Kondo phase shift.

AB - An Aharonov-Bohm interferometer (ABI) carrying a quantum dot on one of its arms is analyzed. It is found that the Kondo temperature of the device may depend strongly on the magnetic flux penetrating the ring. As a result, mesoscopic finite-size effects appear leading to plateaus in the finite-temperature conductance as function of the flux. The possibility to deduce the transmission phase shift of the quantum dot from measurements of the ABI conductance when it is opened (i.e., is connected to more than two leads) is examined, leading to the conclusion that finite-size effects, when significant, may hinder the detection of the Kondo phase shift.

UR - http://www.scopus.com/inward/record.url?scp=29644436099&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.72.245313

DO - 10.1103/PhysRevB.72.245313

M3 - Article

AN - SCOPUS:29644436099

SN - 1098-0121

VL - 72

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 24

M1 - 245313

ER -

Flux-dependent Kondo temperature in an Aharonov-Bohm interferometer with an in-line quantum dot

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this