Increasing the Transition Temperature of High-TC Superconductor Thin Films by Organic Linking of Gold Nanoparticles

H. Alpern; M. Periyasamy; J. Tannous; G. Jung; I. Zaytseva; A. Rosova; Štefan Chromik; V. Štrbík; M. Talacko; S. Yochelis; Y. Yacoby; O. Millo; Y. Paltiel

doi:https://doi.org/10.1007/s10948-020-05450-0

Increasing the Transition Temperature of High-T_C Superconductor Thin Films by Organic Linking of Gold Nanoparticles

H. Alpern, M. Periyasamy, J. Tannous, G. Jung, I. Zaytseva, A. Rosova, Štefan Chromik, V. Štrbík, M. Talacko, S. Yochelis, Y. Yacoby, O. Millo, Y. Paltiel

Ben-Gurion University of the Negev, The Hebrew University of Jerusalem

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

Abstract

The transition temperature, T_C, of two types of optimally doped cuprate high-T_C superconductor films, YBa₂Cu₃O_7-δ and La_1.85Sr_0.15CuO₄, is found to increase upon linking Au nanoparticles to their surface via organic molecules. At the same time, and quite surprisingly, the critical current is reduced. We attribute these results to screening of the Coulomb interactions and smearing the pinning potential landscape. The transition temperature was increased also when the Au NPs were not chemically linked to the surface, consistent with the screening scenario. The linking molecules, however, enable selective adsorption of the gold nanoparticles and their separation from the surface, thus eliminating the conventional proximity effect.

Original language	American English
Pages (from-to)	1941-1948
Number of pages	8
Journal	Journal of Superconductivity and Novel Magnetism
Volume	33
Issue number	7
DOIs	https://doi.org/10.1007/s10948-020-05450-0
State	Published - 1 Jul 2020

Keywords

74.62.-c transition temperature variations
74.62.Yb effects of crystal defects, doping, and substitution—other effects
74.72.Gh cuprate superconductors—hole-doped
Critical temperature enhancement
High-temperature superconductivity
Nanoparticles
Organic molecules

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

https://doi.org/10.1007/s10948-020-05450-0

Cite this

Alpern, H., Periyasamy, M., Tannous, J., Jung, G., Zaytseva, I., Rosova, A., Chromik, Š., Štrbík, V., Talacko, M., Yochelis, S., Yacoby, Y., Millo, O., & Paltiel, Y. (2020). Increasing the Transition Temperature of High-T_C Superconductor Thin Films by Organic Linking of Gold Nanoparticles. Journal of Superconductivity and Novel Magnetism, 33(7), 1941-1948. https://doi.org/10.1007/s10948-020-05450-0

@article{09da46848fc147c99beb31448eab9fda,

title = "Increasing the Transition Temperature of High-TC Superconductor Thin Films by Organic Linking of Gold Nanoparticles",

abstract = "The transition temperature, TC, of two types of optimally doped cuprate high-TC superconductor films, YBa2Cu3O7-δ and La1.85Sr0.15CuO4, is found to increase upon linking Au nanoparticles to their surface via organic molecules. At the same time, and quite surprisingly, the critical current is reduced. We attribute these results to screening of the Coulomb interactions and smearing the pinning potential landscape. The transition temperature was increased also when the Au NPs were not chemically linked to the surface, consistent with the screening scenario. The linking molecules, however, enable selective adsorption of the gold nanoparticles and their separation from the surface, thus eliminating the conventional proximity effect.",

keywords = "74.62.-c transition temperature variations, 74.62.Yb effects of crystal defects, doping, and substitution—other effects, 74.72.Gh cuprate superconductors—hole-doped, Critical temperature enhancement, High-temperature superconductivity, Nanoparticles, Organic molecules",

author = "H. Alpern and M. Periyasamy and J. Tannous and G. Jung and I. Zaytseva and A. Rosova and {\v S}tefan Chromik and V. {\v S}trb{\'i}k and M. Talacko and S. Yochelis and Y. Yacoby and O. Millo and Y. Paltiel",

note = "Publisher Copyright: {\textcopyright} 2020, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2020",

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Alpern, H, Periyasamy, M, Tannous, J, Jung, G, Zaytseva, I, Rosova, A, Chromik, Š, Štrbík, V, Talacko, M, Yochelis, S, Yacoby, Y, Millo, O & Paltiel, Y 2020, 'Increasing the Transition Temperature of High-T_C Superconductor Thin Films by Organic Linking of Gold Nanoparticles', Journal of Superconductivity and Novel Magnetism, vol. 33, no. 7, pp. 1941-1948. https://doi.org/10.1007/s10948-020-05450-0

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AU - Alpern, H.

AU - Periyasamy, M.

AU - Tannous, J.

AU - Jung, G.

AU - Zaytseva, I.

AU - Rosova, A.

AU - Chromik, Štefan

AU - Štrbík, V.

AU - Talacko, M.

AU - Yochelis, S.

AU - Yacoby, Y.

AU - Millo, O.

AU - Paltiel, Y.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - The transition temperature, TC, of two types of optimally doped cuprate high-TC superconductor films, YBa2Cu3O7-δ and La1.85Sr0.15CuO4, is found to increase upon linking Au nanoparticles to their surface via organic molecules. At the same time, and quite surprisingly, the critical current is reduced. We attribute these results to screening of the Coulomb interactions and smearing the pinning potential landscape. The transition temperature was increased also when the Au NPs were not chemically linked to the surface, consistent with the screening scenario. The linking molecules, however, enable selective adsorption of the gold nanoparticles and their separation from the surface, thus eliminating the conventional proximity effect.

AB - The transition temperature, TC, of two types of optimally doped cuprate high-TC superconductor films, YBa2Cu3O7-δ and La1.85Sr0.15CuO4, is found to increase upon linking Au nanoparticles to their surface via organic molecules. At the same time, and quite surprisingly, the critical current is reduced. We attribute these results to screening of the Coulomb interactions and smearing the pinning potential landscape. The transition temperature was increased also when the Au NPs were not chemically linked to the surface, consistent with the screening scenario. The linking molecules, however, enable selective adsorption of the gold nanoparticles and their separation from the surface, thus eliminating the conventional proximity effect.

KW - 74.62.-c transition temperature variations

KW - 74.62.Yb effects of crystal defects, doping, and substitution—other effects

KW - 74.72.Gh cuprate superconductors—hole-doped

KW - Critical temperature enhancement

KW - High-temperature superconductivity

KW - Nanoparticles

KW - Organic molecules

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