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Observation of enhanced superconductivity in the vicinity of Ar-induced nano-cavities in Pb(111)

Title
Observation of enhanced superconductivity in the vicinity of Ar-induced nano-cavities in Pb(111)
Authors
Song, Sang-YongSeo, Jung-Pil
DGIST Authors
Song, Sang-Yong; Seo, Jung-Pil
Issue Date
2017-09
Citation
Scientific Reports, 7(1)
Type
Article
Article Type
Article
Keywords
Thin-FilmsStates
ISSN
2045-2322
Abstract
Local variations of superconductivity have been studied using scanning tunneling microscopy around nano-cavities formed by Ar ions embedded in Pb(111). Various factors including the density of states at Fermi energy, electron-phonon couplings, and quantum well states, which are known to affect superconductivity, have been examined. We show that the superconductivity is enhanced near the nano-cavities and propose that quantum effects such as quantum confinement, proximity effect and multi-gap effect are possibly involved in determining the superconducting gap of this system. These results have important implications for the characterization and understanding of superconductivity at a nanometer scale. © 2017 The Author(s).
URI
http://hdl.handle.net/20.500.11750/4604
DOI
10.1038/s41598-017-12505-1
Publisher
Nature Publishing Group
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceNanospm Lab(Quantum Physics Research Group)1. Journal Articles


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