Journal of Physics Condensed Matter, volume 32, issue 43, pages 435001
Quantum-well and modified image-potential states in thin Pb(111) films: an estimate for the local work function
Publication type: Journal Article
Publication date: 2020-08-03
Journal:
Journal of Physics Condensed Matter
Quartile SCImago
Q2
Quartile WOS
Q3
Impact factor: 2.7
ISSN: 09538984, 1361648X
Condensed Matter Physics
General Materials Science
Abstract
Quantum-confined electronic states such as quantum-well states (QWS) inside thin Pb(111) films and modified image-potential states (IPS) above the Pb(111) films grown on Si(111)7$\times$7 substrate were studied by means of low-temperature scanning tunnelling microscopy (STM) and spectroscopy (STS) in the regime of constant current $I$. By plotting the position of the $n-$th emission resonances $U^{\,}_n$ versus $n^{2/3}$ and extrapolating the linear fit for the dependence $U^{\,}_n(n^{2/3})$ in the high-$n$ limit towards $n=0$, we estimate the local work function for the Pb(111) film: $W\simeq 3.8\pm 0.1\,$eV. We experimentally demonstrate that modifications of the shape of the STM tip can change the number of the emission peaks associated with the resonant tunnelling via quantized IPS levels for the same Pb terrace; however it does not affect the estimate of the local work function for the flat Pb terraces. We observe that the maxima in the spectra of the differential tunnelling conductance $dI/dU$ related to both the QWS and the modified IPS resonances are less pronounced if the STM tip becomes more blunt.
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Journal of Physical Chemistry C
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3 publications, 50%
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Journal of Physical Chemistry Letters
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1 publication, 16.67%
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Applied Physics Letters
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1 publication, 16.67%
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Surface Science
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Citations by publishers
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4
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American Chemical Society (ACS)
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4 publications, 66.67%
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American Institute of Physics (AIP)
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American Institute of Physics (AIP)
1 publication, 16.67%
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Elsevier
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Elsevier
1 publication, 16.67%
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Aladyshkin A. Quantum-well and modified image-potential states in thin Pb(111) films: an estimate for the local work function // Journal of Physics Condensed Matter. 2020. Vol. 32. No. 43. p. 435001.
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Aladyshkin A. Quantum-well and modified image-potential states in thin Pb(111) films: an estimate for the local work function // Journal of Physics Condensed Matter. 2020. Vol. 32. No. 43. p. 435001.
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TY - JOUR
DO - 10.1088/1361-648X/aba3f0
UR - https://doi.org/10.1088%2F1361-648X%2Faba3f0
TI - Quantum-well and modified image-potential states in thin Pb(111) films: an estimate for the local work function
T2 - Journal of Physics Condensed Matter
AU - Aladyshkin, A.Y
PY - 2020
DA - 2020/08/03 00:00:00
PB - IOP Publishing
SP - 435001
IS - 43
VL - 32
SN - 0953-8984
SN - 1361-648X
ER -
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@article{2020_Aladyshkin,
author = {A.Y Aladyshkin},
title = {Quantum-well and modified image-potential states in thin Pb(111) films: an estimate for the local work function},
journal = {Journal of Physics Condensed Matter},
year = {2020},
volume = {32},
publisher = {IOP Publishing},
month = {aug},
url = {https://doi.org/10.1088%2F1361-648X%2Faba3f0},
number = {43},
pages = {435001},
doi = {10.1088/1361-648X/aba3f0}
}
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Aladyshkin, A.Y. “Quantum-well and modified image-potential states in thin Pb(111) films: an estimate for the local work function.” Journal of Physics Condensed Matter, vol. 32, no. 43, Aug. 2020, p. 435001. https://doi.org/10.1088%2F1361-648X%2Faba3f0.
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