Phase breaking of trapped electrons in a gated quantum dot

N. Sasaki; Y. Ohkubo; Y. Ochiai; K. Ishibashi; J. P. Bird; Y. Aoyagi; T. Sugano; D. K. Ferry

doi:10.1006/spmi.1996.0264

Phase breaking of trapped electrons in a gated quantum dot

N. Sasaki, Y. Ohkubo, Y. Ochiai, K. Ishibashi, J. P. Bird, Y. Aoyagi, T. Sugano, D. K. Ferry

Electrical Engineering

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

1 Scopus citations

Abstract

We have observed conductance fluctuations due to electron interference in a split-gate quantum dot, fabricated in the two-dimensional electron gas of a GaAs/Al_xGa_1-xAs heterojunction. We have determined the phase breaking time of electrons by two independent analyses, using the correlation field and the amplitude of the fluctuations. Phase breaking times obtained by these distinct approaches are found to differ from each other by a factor of six.

Original language	English (US)
Pages (from-to)	69-74
Number of pages	6
Journal	Superlattices and Microstructures
Volume	22
Issue number	1
DOIs	https://doi.org/10.1006/spmi.1996.0264
State	Published - Jul 1997

Keywords

Conductance fluctuations
GaAs/AlGaAs
Phase breaking time

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1006/spmi.1996.0264

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title = "Phase breaking of trapped electrons in a gated quantum dot",

abstract = "We have observed conductance fluctuations due to electron interference in a split-gate quantum dot, fabricated in the two-dimensional electron gas of a GaAs/AlxGa1-xAs heterojunction. We have determined the phase breaking time of electrons by two independent analyses, using the correlation field and the amplitude of the fluctuations. Phase breaking times obtained by these distinct approaches are found to differ from each other by a factor of six.",

keywords = "Conductance fluctuations, GaAs/AlGaAs, Phase breaking time",

author = "N. Sasaki and Y. Ohkubo and Y. Ochiai and K. Ishibashi and Bird, {J. P.} and Y. Aoyagi and T. Sugano and Ferry, {D. K.}",

note = "Funding Information: Acknowledgements—We are grateful to the NEDO, Nanostructures and Electron Waves Project, for their financial support. Also, the financial support of Grant-in-Aid for Scientific Research on Priority Areas supported by the Ministry of Education, Science and Culture, Quantum Coherent Electronics, is gratefully acknowledged.",

year = "1997",

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doi = "10.1006/spmi.1996.0264",

language = "English (US)",

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TY - JOUR

T1 - Phase breaking of trapped electrons in a gated quantum dot

AU - Sasaki, N.

AU - Ohkubo, Y.

AU - Ochiai, Y.

AU - Ishibashi, K.

AU - Bird, J. P.

AU - Aoyagi, Y.

AU - Sugano, T.

AU - Ferry, D. K.

N1 - Funding Information: Acknowledgements—We are grateful to the NEDO, Nanostructures and Electron Waves Project, for their financial support. Also, the financial support of Grant-in-Aid for Scientific Research on Priority Areas supported by the Ministry of Education, Science and Culture, Quantum Coherent Electronics, is gratefully acknowledged.

PY - 1997/7

Y1 - 1997/7

N2 - We have observed conductance fluctuations due to electron interference in a split-gate quantum dot, fabricated in the two-dimensional electron gas of a GaAs/AlxGa1-xAs heterojunction. We have determined the phase breaking time of electrons by two independent analyses, using the correlation field and the amplitude of the fluctuations. Phase breaking times obtained by these distinct approaches are found to differ from each other by a factor of six.

AB - We have observed conductance fluctuations due to electron interference in a split-gate quantum dot, fabricated in the two-dimensional electron gas of a GaAs/AlxGa1-xAs heterojunction. We have determined the phase breaking time of electrons by two independent analyses, using the correlation field and the amplitude of the fluctuations. Phase breaking times obtained by these distinct approaches are found to differ from each other by a factor of six.

KW - Conductance fluctuations

KW - GaAs/AlGaAs

KW - Phase breaking time

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DO - 10.1006/spmi.1996.0264

M3 - Article

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EP - 74

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

IS - 1

ER -

Phase breaking of trapped electrons in a gated quantum dot

Abstract

Keywords

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