Direct imaging of single Au atoms within GaAs nanowires

Maya Bar-Sadan; Juri Barthel; Hadas Shtrikman; Lothar Houben

doi:10.1021/nl300314k

Direct imaging of single Au atoms within GaAs nanowires

Maya Bar-Sadan, Juri Barthel, Hadas Shtrikman, Lothar Houben

Department of Chemistry

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

152 Scopus citations

Abstract

Incorporation of catalyst atoms during the growth process of semiconductor nanowires reduces the electron mean free path and degrades their electronic properties. Aberration-corrected scanning transmission electron microscopy (STEM) is now capable of directly imaging single Au atoms within the dense matrix of a GaAs crystal, by slightly tilting the GaAs lattice planes with respect to the incident electron beam. Au doping values in the order of 10 ^17-18 cm ³ were measured, making ballistic transport through the nanowires practically inaccessible.

Original language	English
Pages (from-to)	2352-2356
Number of pages	5
Journal	Nano Letters
Volume	12
Issue number	5
DOIs	https://doi.org/10.1021/nl300314k
State	Published - 9 May 2012

Keywords

Single atom detection
dopants
nanowires
scanning transmission electron microscopy
transport phenomena

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl300314k

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abstract = "Incorporation of catalyst atoms during the growth process of semiconductor nanowires reduces the electron mean free path and degrades their electronic properties. Aberration-corrected scanning transmission electron microscopy (STEM) is now capable of directly imaging single Au atoms within the dense matrix of a GaAs crystal, by slightly tilting the GaAs lattice planes with respect to the incident electron beam. Au doping values in the order of 10 17-18 cm 3 were measured, making ballistic transport through the nanowires practically inaccessible.",

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AB - Incorporation of catalyst atoms during the growth process of semiconductor nanowires reduces the electron mean free path and degrades their electronic properties. Aberration-corrected scanning transmission electron microscopy (STEM) is now capable of directly imaging single Au atoms within the dense matrix of a GaAs crystal, by slightly tilting the GaAs lattice planes with respect to the incident electron beam. Au doping values in the order of 10 17-18 cm 3 were measured, making ballistic transport through the nanowires practically inaccessible.

KW - Single atom detection

KW - dopants

KW - nanowires

KW - scanning transmission electron microscopy

KW - transport phenomena

UR - https://www.scopus.com/pages/publications/84861015800

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Direct imaging of single Au atoms within GaAs nanowires

Abstract

Keywords

ASJC Scopus subject areas

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