Atomically resolved charge redistribution for Ga nanocluster arrays on the Si(111)-7 × 7 surface

Qing Hua Wang; Mark C. Hersam

doi:10.1002/smll.200700989

Atomically resolved charge redistribution for Ga nanocluster arrays on the Si(111)-7 × 7 surface

Qing Hua Wang, Mark C. Hersam

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

6 Scopus citations

Abstract

A study was conducted to observe atomically resolved, delocalized two-dimensional charge redistribution associated with Ga nanocluster arrays on the Si(111)-7×7 surface. The study used the topographic scanning tunneling microscopy (STM) images and spatial maps of the differential tunneling conductance to measure the surface local density of states (LDOS) of the surface. The study found that the electronic properties of self-assembled Ga nanocluster array on the Si(111)-7×7 surface can be mapped with atomic-scale spatial resolution. The study found that differential tunneling conductance maps show regions of increased LDOS form an interconnected two-dimensional network of Ga nanoclusters. The study used a UHV STM system and imaging chambers operating at room temperature, and placed the Ga metal in an alumina-coated W wire boat.

Original language	English (US)
Pages (from-to)	915-919
Number of pages	5
Journal	Small
Volume	4
Issue number	7
DOIs	https://doi.org/10.1002/smll.200700989
State	Published - Jul 2008
Externally published	Yes

Keywords

Electronic structure
Scanning tunneling microscopy
Self-assembly
Semiconductor nanocrystals
Surface patterning

ASJC Scopus subject areas

Biotechnology
Biomaterials
Chemistry(all)
Materials Science(all)

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10.1002/smll.200700989

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title = "Atomically resolved charge redistribution for Ga nanocluster arrays on the Si(111)-7 × 7 surface",

abstract = "A study was conducted to observe atomically resolved, delocalized two-dimensional charge redistribution associated with Ga nanocluster arrays on the Si(111)-7×7 surface. The study used the topographic scanning tunneling microscopy (STM) images and spatial maps of the differential tunneling conductance to measure the surface local density of states (LDOS) of the surface. The study found that the electronic properties of self-assembled Ga nanocluster array on the Si(111)-7×7 surface can be mapped with atomic-scale spatial resolution. The study found that differential tunneling conductance maps show regions of increased LDOS form an interconnected two-dimensional network of Ga nanoclusters. The study used a UHV STM system and imaging chambers operating at room temperature, and placed the Ga metal in an alumina-coated W wire boat.",

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AU - Wang, Qing Hua

AU - Hersam, Mark C.

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N2 - A study was conducted to observe atomically resolved, delocalized two-dimensional charge redistribution associated with Ga nanocluster arrays on the Si(111)-7×7 surface. The study used the topographic scanning tunneling microscopy (STM) images and spatial maps of the differential tunneling conductance to measure the surface local density of states (LDOS) of the surface. The study found that the electronic properties of self-assembled Ga nanocluster array on the Si(111)-7×7 surface can be mapped with atomic-scale spatial resolution. The study found that differential tunneling conductance maps show regions of increased LDOS form an interconnected two-dimensional network of Ga nanoclusters. The study used a UHV STM system and imaging chambers operating at room temperature, and placed the Ga metal in an alumina-coated W wire boat.

AB - A study was conducted to observe atomically resolved, delocalized two-dimensional charge redistribution associated with Ga nanocluster arrays on the Si(111)-7×7 surface. The study used the topographic scanning tunneling microscopy (STM) images and spatial maps of the differential tunneling conductance to measure the surface local density of states (LDOS) of the surface. The study found that the electronic properties of self-assembled Ga nanocluster array on the Si(111)-7×7 surface can be mapped with atomic-scale spatial resolution. The study found that differential tunneling conductance maps show regions of increased LDOS form an interconnected two-dimensional network of Ga nanoclusters. The study used a UHV STM system and imaging chambers operating at room temperature, and placed the Ga metal in an alumina-coated W wire boat.

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KW - Scanning tunneling microscopy

KW - Self-assembly

KW - Semiconductor nanocrystals

KW - Surface patterning

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Atomically resolved charge redistribution for Ga nanocluster arrays on the Si(111)-7 × 7 surface

Abstract

Keywords

ASJC Scopus subject areas

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