Impact of small-angle scattering on Ballistic transport in quantum dots

A. M. See; I. Pilgrim; null Scannell; R.D. Montgomery; A. M. Bruke; Martin Aagesen; Poul Erik Lindelof; I. Farrer; D.A. Ritchie; R.P. Taylor; A.R. Hamilton; A.P. Micolich

doi:10.1103/PhysRevLett.108.196807

Impact of small-angle scattering on Ballistic transport in quantum dots

A. M. See, I. Pilgrim, Scannell, R.D. Montgomery, A. M. Bruke, Martin Aagesen, Poul Erik Lindelof, I. Farrer, D.A. Ritchie, R.P. Taylor, A.R. Hamilton, A.P. Micolich

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25 Citationer (Scopus)

Abstract

Disorder increasingly affects performance as electronic devices are reduced in size. The ionized dopants used to populate a device with electrons are particularly problematic, leading to unpredictable changes in the behavior of devices such as quantum dots each time they are cooled for use. We show that a quantum dot can be used as a highly sensitive probe of changes in disorder potential and that, by removing the ionized dopants and populating the dot electrostatically, its electronic properties become reproducible with high fidelity after thermal cycling to room temperature. Our work demonstrates that the disorder potential has a significant, perhaps even dominant, influence on the electron dynamics, with important implications for "ballistic" transport in quantum dots.

Originalsprog	Engelsk
Tidsskrift	Physical Review Letters
Vol/bind	108
Udgave nummer	19
Sider (fra-til)	196807
Antal sider	5
ISSN	0031-9007
DOI	https://doi.org/10.1103/PhysRevLett.108.196807
Status	Udgivet - 11 maj 2012

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10.1103/PhysRevLett.108.196807

http://link.aps.org/doi/10.1103/PhysRevLett.108.196807

Citationsformater

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abstract = "Disorder increasingly affects performance as electronic devices are reduced in size. The ionized dopants used to populate a device with electrons are particularly problematic, leading to unpredictable changes in the behavior of devices such as quantum dots each time they are cooled for use. We show that a quantum dot can be used as a highly sensitive probe of changes in disorder potential and that, by removing the ionized dopants and populating the dot electrostatically, its electronic properties become reproducible with high fidelity after thermal cycling to room temperature. Our work demonstrates that the disorder potential has a significant, perhaps even dominant, influence on the electron dynamics, with important implications for {"}ballistic{"} transport in quantum dots.",

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TY - JOUR

T1 - Impact of small-angle scattering on Ballistic transport in quantum dots

AU - See, A. M.

AU - Pilgrim, I.

AU - Scannell, null

AU - Montgomery, R.D.

AU - Bruke, A. M.

AU - Aagesen, Martin

AU - Lindelof, Poul Erik

AU - Farrer, I.

AU - Ritchie, D.A.

AU - Taylor, R.P.

AU - Hamilton, A.R.

AU - Micolich, A.P.

PY - 2012/5/11

Y1 - 2012/5/11

N2 - Disorder increasingly affects performance as electronic devices are reduced in size. The ionized dopants used to populate a device with electrons are particularly problematic, leading to unpredictable changes in the behavior of devices such as quantum dots each time they are cooled for use. We show that a quantum dot can be used as a highly sensitive probe of changes in disorder potential and that, by removing the ionized dopants and populating the dot electrostatically, its electronic properties become reproducible with high fidelity after thermal cycling to room temperature. Our work demonstrates that the disorder potential has a significant, perhaps even dominant, influence on the electron dynamics, with important implications for "ballistic" transport in quantum dots.

AB - Disorder increasingly affects performance as electronic devices are reduced in size. The ionized dopants used to populate a device with electrons are particularly problematic, leading to unpredictable changes in the behavior of devices such as quantum dots each time they are cooled for use. We show that a quantum dot can be used as a highly sensitive probe of changes in disorder potential and that, by removing the ionized dopants and populating the dot electrostatically, its electronic properties become reproducible with high fidelity after thermal cycling to room temperature. Our work demonstrates that the disorder potential has a significant, perhaps even dominant, influence on the electron dynamics, with important implications for "ballistic" transport in quantum dots.

U2 - 10.1103/PhysRevLett.108.196807

DO - 10.1103/PhysRevLett.108.196807

M3 - Journal article

C2 - 23003076

SN - 0031-9007

VL - 108

SP - 196807

JO - Physical Review Letters

JF - Physical Review Letters

IS - 19

ER -

Impact of small-angle scattering on Ballistic transport in quantum dots

Abstract

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