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Ham, Ungdon
원자제어 저차원 전자계 연구단
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Influence of the Tip Shape on Scanning Tunneling Luminescence Spectra: Implications for Nanomaterial Characterization

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Title
Influence of the Tip Shape on Scanning Tunneling Luminescence Spectra: Implications for Nanomaterial Characterization
Author(s)
Cui, Songbin; Kim, Tae-Hwan; Ham, Ungdon
Publication Date
2021-01
Journal
ACS APPLIED NANO MATERIALS, v.4, no.1, pp.29 - 32
Publisher
AMER CHEMICAL SOC
Abstract
Scanning tunneling luminescence (STL) provides a unique opportunity to determine the optical properties of nanostructures beyond the diffraction limit. However, the relationship between the STL spectra and nanoscale tip shapes remains poorly understood because of the uncertainty regarding the nanoscale tip geometry. Here, we provide direct experimental evidence supporting a relationship between the tip shapes and resulting STL spectra. We find that asymmetric nanoscale tips generated dissimilar STL spectra in different directions by simultaneously collecting STL spectra in two opposing directions. Our experiment provides an efficient way to tune the STL spectra, which can be used to characterize the optical properties of nanomaterials.
URI
https://pr.ibs.re.kr/handle/8788114/9497
DOI
10.1021/acsanm.0c03130
ISSN
2574-0970
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
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