Saturation of phase breaking in an open ballistic quantum dot

D. P. Pivin; A. Andresen; J. P. Bird; D. K. Ferry

doi:10.1016/S0921-4526(99)00348-8

Saturation of phase breaking in an open ballistic quantum dot

D. P. Pivin, A. Andresen, J. P. Bird, D. K. Ferry

Research output: Contribution to journal › Conference article › peer-review

Abstract

One of the key parameters for the observation of quantum interference effects in mesoscopic systems is the phase-breaking time τ_φ. While there have been many measurements of this important phase-breaking time in diffusive mesoscopic structures, there have been relatively few studies of phase breaking in zero-dimensional structures. Here, a saturation of the phase-breaking time at low temperatures is found, with a decay at higher temperatures generally of the form of T^-2/3. Variation with dot size suggests a scaling in which the phase-breaking interaction is described by the total number of electrons N = nA within the dot.

Original language	English (US)
Pages (from-to)	72-74
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	272
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(99)00348-8
State	Published - Dec 1 1999
Event	Proceedings of the 1999 11th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-11) - Kyoto, Jpn Duration: Jul 19 1999 → Jul 23 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(99)00348-8

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title = "Saturation of phase breaking in an open ballistic quantum dot",

abstract = "One of the key parameters for the observation of quantum interference effects in mesoscopic systems is the phase-breaking time τφ. While there have been many measurements of this important phase-breaking time in diffusive mesoscopic structures, there have been relatively few studies of phase breaking in zero-dimensional structures. Here, a saturation of the phase-breaking time at low temperatures is found, with a decay at higher temperatures generally of the form of T-2/3. Variation with dot size suggests a scaling in which the phase-breaking interaction is described by the total number of electrons N = nA within the dot.",

author = "Pivin, {D. P.} and A. Andresen and Bird, {J. P.} and Ferry, {D. K.}",

note = "Funding Information: This work was supported by the Office of Naval Research. The authors express their appreciation to R. Akis and M. Khoury for helpful discussions. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; Proceedings of the 1999 11th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-11) ; Conference date: 19-07-1999 Through 23-07-1999",

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doi = "10.1016/S0921-4526(99)00348-8",

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T1 - Saturation of phase breaking in an open ballistic quantum dot

AU - Pivin, D. P.

AU - Andresen, A.

AU - Bird, J. P.

AU - Ferry, D. K.

N1 - Funding Information: This work was supported by the Office of Naval Research. The authors express their appreciation to R. Akis and M. Khoury for helpful discussions. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - One of the key parameters for the observation of quantum interference effects in mesoscopic systems is the phase-breaking time τφ. While there have been many measurements of this important phase-breaking time in diffusive mesoscopic structures, there have been relatively few studies of phase breaking in zero-dimensional structures. Here, a saturation of the phase-breaking time at low temperatures is found, with a decay at higher temperatures generally of the form of T-2/3. Variation with dot size suggests a scaling in which the phase-breaking interaction is described by the total number of electrons N = nA within the dot.

AB - One of the key parameters for the observation of quantum interference effects in mesoscopic systems is the phase-breaking time τφ. While there have been many measurements of this important phase-breaking time in diffusive mesoscopic structures, there have been relatively few studies of phase breaking in zero-dimensional structures. Here, a saturation of the phase-breaking time at low temperatures is found, with a decay at higher temperatures generally of the form of T-2/3. Variation with dot size suggests a scaling in which the phase-breaking interaction is described by the total number of electrons N = nA within the dot.

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DO - 10.1016/S0921-4526(99)00348-8

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SN - 0921-4526

VL - 272

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EP - 74

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

T2 - Proceedings of the 1999 11th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-11)

Y2 - 19 July 1999 through 23 July 1999

ER -

Saturation of phase breaking in an open ballistic quantum dot

Abstract

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