Magnetotransport spectroscopy of a quantum dot: Effects of lead opening and phase coherence

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

doi:10.1016/S1386-9477(99)00206-4

Magnetotransport spectroscopy of a quantum dot: Effects of lead opening and phase coherence

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

Department of Electrical Engineering

Arizona State University

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

1 Scopus citations

Abstract

We compare open quantum dot magnetoconductance spectra from experiment and theory in the presence of environmental coupling and attributed broadening. Estimates of the phase-breaking time in experiment, and effective broadening in simulation, are determined independently. In a larger, more open dot, with a significantly shorter phase-breaking time, the observed spectrum is broadened, most noticeably about B = 0. The required broadening in simulation is characterized by effective temperatures higher than estimates from experiment; however, without accounting for disorder, which will further broaden the spectrum, the agreement is reasonable.

Original language	English
Pages (from-to)	404-408
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	6
Issue number	1
DOIs	https://doi.org/10.1016/S1386-9477(99)00206-4
State	Published - Feb 2000
Event	13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can Duration: Aug 1 1999 → Aug 6 1999

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10.1016/S1386-9477(99)00206-4

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title = "Magnetotransport spectroscopy of a quantum dot: Effects of lead opening and phase coherence",

abstract = "We compare open quantum dot magnetoconductance spectra from experiment and theory in the presence of environmental coupling and attributed broadening. Estimates of the phase-breaking time in experiment, and effective broadening in simulation, are determined independently. In a larger, more open dot, with a significantly shorter phase-breaking time, the observed spectrum is broadened, most noticeably about B = 0. The required broadening in simulation is characterized by effective temperatures higher than estimates from experiment; however, without accounting for disorder, which will further broaden the spectrum, the agreement is reasonable.",

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doi = "10.1016/S1386-9477(99)00206-4",

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TY - JOUR

T1 - Magnetotransport spectroscopy of a quantum dot

T2 - 13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13)

AU - Pivin, D. P.

AU - Andresen, A.

AU - Bird, J. P.

AU - Akis, R.

AU - Ferry, D. K.

PY - 2000/2

Y1 - 2000/2

N2 - We compare open quantum dot magnetoconductance spectra from experiment and theory in the presence of environmental coupling and attributed broadening. Estimates of the phase-breaking time in experiment, and effective broadening in simulation, are determined independently. In a larger, more open dot, with a significantly shorter phase-breaking time, the observed spectrum is broadened, most noticeably about B = 0. The required broadening in simulation is characterized by effective temperatures higher than estimates from experiment; however, without accounting for disorder, which will further broaden the spectrum, the agreement is reasonable.

AB - We compare open quantum dot magnetoconductance spectra from experiment and theory in the presence of environmental coupling and attributed broadening. Estimates of the phase-breaking time in experiment, and effective broadening in simulation, are determined independently. In a larger, more open dot, with a significantly shorter phase-breaking time, the observed spectrum is broadened, most noticeably about B = 0. The required broadening in simulation is characterized by effective temperatures higher than estimates from experiment; however, without accounting for disorder, which will further broaden the spectrum, the agreement is reasonable.

UR - https://www.scopus.com/pages/publications/0034138739

U2 - 10.1016/S1386-9477(99)00206-4

DO - 10.1016/S1386-9477(99)00206-4

M3 - Conference article

AN - SCOPUS:0034138739

SN - 1386-9477

VL - 6

SP - 404

EP - 408

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1

Y2 - 1 August 1999 through 6 August 1999

ER -

Magnetotransport spectroscopy of a quantum dot: Effects of lead opening and phase coherence

Abstract

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