Journal of Physics Condensed Matter, volume 26, issue 42, pages 425703
Superconductivity of lanthanum revisited: enhanced critical temperature in the clean limit.
Publication type: Journal Article
Publication date: 2014-10-02
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
The thickness dependence of the superconducting energy gap $\Delta_{\rm{La}}$ of double hexagonally close packed (dhcp) lanthanum islands grown on W(110) is studied by scanning tunneling spectroscopy, from the bulk to the thin film limit. Superconductivity is suppressed by the boundary conditions for the superconducting wavefunction at the surface and W/La interface, leading to a linear decrease of the critical temperature $T_c$ as a function of the inverse film thickness. For thick, bulk-like films, $\Delta_{\rm{La}}$ and $T_c$ are 40% larger as compared to literature values of dhcp La measured by other techniques. This finding is reconciled by examining the effects of surface contamination as probed by modifications of the surface state, suggesting that the large $T_c$ originates in the superior purity of the samples investigated here.
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- We do not take into account publications that without a DOI.
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- Statistics recalculated weekly.
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Löptien P. et al. Superconductivity of lanthanum revisited: enhanced critical temperature in the clean limit. // Journal of Physics Condensed Matter. 2014. Vol. 26. No. 42. p. 425703.
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Löptien P., Zhou L., Khajetoorians A. A., Wiebe J., Wiesendanger R. Superconductivity of lanthanum revisited: enhanced critical temperature in the clean limit. // Journal of Physics Condensed Matter. 2014. Vol. 26. No. 42. p. 425703.
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TY - JOUR
DO - 10.1088/0953-8984/26/42/425703
UR - https://doi.org/10.1088%2F0953-8984%2F26%2F42%2F425703
TI - Superconductivity of lanthanum revisited: enhanced critical temperature in the clean limit.
T2 - Journal of Physics Condensed Matter
AU - Löptien, P.
AU - Zhou, L.
AU - Khajetoorians, Alexander Ako
AU - Wiebe, Jens
AU - Wiesendanger, R.
PY - 2014
DA - 2014/10/02 00:00:00
PB - IOP Publishing
SP - 425703
IS - 42
VL - 26
SN - 0953-8984
SN - 1361-648X
ER -
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@article{2014_Löptien,
author = {P. Löptien and L. Zhou and Alexander Ako Khajetoorians and Jens Wiebe and R. Wiesendanger},
title = {Superconductivity of lanthanum revisited: enhanced critical temperature in the clean limit.},
journal = {Journal of Physics Condensed Matter},
year = {2014},
volume = {26},
publisher = {IOP Publishing},
month = {oct},
url = {https://doi.org/10.1088%2F0953-8984%2F26%2F42%2F425703},
number = {42},
pages = {425703},
doi = {10.1088/0953-8984/26/42/425703}
}
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Löptien, P., et al. “Superconductivity of lanthanum revisited: enhanced critical temperature in the clean limit..” Journal of Physics Condensed Matter, vol. 26, no. 42, Oct. 2014, p. 425703. https://doi.org/10.1088%2F0953-8984%2F26%2F42%2F425703.
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