SUPERCONDUCTIVITY IN THIN TRANSITION-METAL FILMS: ITS SUPPRESSION BY REDUCED DIMENSIONALITY AND LOCALIZATION.

C. L. Fu; Arthur J Freeman; E. Wimmer; H. J.F. Jansen

SUPERCONDUCTIVITY IN THIN TRANSITION-METAL FILMS: ITS SUPPRESSION BY REDUCED DIMENSIONALITY AND LOCALIZATION.

C. L. Fu^*, Arthur J Freeman, E. Wimmer, H. J.F. Jansen

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The effects of reduced dimensionality on the superconductivity of thin films - Nb(100) and V(100) - and Ag/V/Ag(100) sandwiches are investigated using the all-electron self-consistent full potential linearized augmented plane wave (FLAPW) method. Results of calculations of the electronic structures are used along with the rigid-ion approximation and McMillan strong coupling theory to calculate the layer-by-layer contribution to the electron-phonon coupling. Despite a high N(E//F) which remains at the surface layer, the electronic contribution to the electron-phonon coupling is found to be strongly suppressed by dimensional constraints. Localization of the surface states and the decrease of p-like electrons at the surface are shown to be behind this suppression. This implies that superconductivity is diminished in reduced dimensional transition metal films.

Original language	English (US)
Pages (from-to)	103-107
Number of pages	5
Journal	Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
Volume	135
Issue number	1-3
State	Published - Dec 1 1985
Event	Proc of the Int Conf on Mater and Mech of Supercond, M2S - Ames, IA, USA Duration: May 29 1985 → May 31 1985

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Engineering(all)

Cite this

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title = "SUPERCONDUCTIVITY IN THIN TRANSITION-METAL FILMS: ITS SUPPRESSION BY REDUCED DIMENSIONALITY AND LOCALIZATION.",

abstract = "The effects of reduced dimensionality on the superconductivity of thin films - Nb(100) and V(100) - and Ag/V/Ag(100) sandwiches are investigated using the all-electron self-consistent full potential linearized augmented plane wave (FLAPW) method. Results of calculations of the electronic structures are used along with the rigid-ion approximation and McMillan strong coupling theory to calculate the layer-by-layer contribution to the electron-phonon coupling. Despite a high N(E//F) which remains at the surface layer, the electronic contribution to the electron-phonon coupling is found to be strongly suppressed by dimensional constraints. Localization of the surface states and the decrease of p-like electrons at the surface are shown to be behind this suppression. This implies that superconductivity is diminished in reduced dimensional transition metal films.",

author = "Fu, {C. L.} and Freeman, {Arthur J} and E. Wimmer and Jansen, {H. J.F.}",

year = "1985",

month = dec,

day = "1",

language = "English (US)",

volume = "135",

pages = "103--107",

journal = "Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics",

issn = "0165-1757",

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number = "1-3",

note = "Proc of the Int Conf on Mater and Mech of Supercond, M2S ; Conference date: 29-05-1985 Through 31-05-1985",

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SUPERCONDUCTIVITY IN THIN TRANSITION-METAL FILMS: ITS SUPPRESSION BY REDUCED DIMENSIONALITY AND LOCALIZATION. / Fu, C. L.; Freeman, Arthur J; Wimmer, E. et al.
In: Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics, Vol. 135, No. 1-3, 01.12.1985, p. 103-107.

Research output: Contribution to journal › Conference article › peer-review

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T2 - Proc of the Int Conf on Mater and Mech of Supercond, M2S

AU - Fu, C. L.

AU - Freeman, Arthur J

AU - Wimmer, E.

AU - Jansen, H. J.F.

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N2 - The effects of reduced dimensionality on the superconductivity of thin films - Nb(100) and V(100) - and Ag/V/Ag(100) sandwiches are investigated using the all-electron self-consistent full potential linearized augmented plane wave (FLAPW) method. Results of calculations of the electronic structures are used along with the rigid-ion approximation and McMillan strong coupling theory to calculate the layer-by-layer contribution to the electron-phonon coupling. Despite a high N(E//F) which remains at the surface layer, the electronic contribution to the electron-phonon coupling is found to be strongly suppressed by dimensional constraints. Localization of the surface states and the decrease of p-like electrons at the surface are shown to be behind this suppression. This implies that superconductivity is diminished in reduced dimensional transition metal films.

AB - The effects of reduced dimensionality on the superconductivity of thin films - Nb(100) and V(100) - and Ag/V/Ag(100) sandwiches are investigated using the all-electron self-consistent full potential linearized augmented plane wave (FLAPW) method. Results of calculations of the electronic structures are used along with the rigid-ion approximation and McMillan strong coupling theory to calculate the layer-by-layer contribution to the electron-phonon coupling. Despite a high N(E//F) which remains at the surface layer, the electronic contribution to the electron-phonon coupling is found to be strongly suppressed by dimensional constraints. Localization of the surface states and the decrease of p-like electrons at the surface are shown to be behind this suppression. This implies that superconductivity is diminished in reduced dimensional transition metal films.

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Y2 - 29 May 1985 through 31 May 1985

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SUPERCONDUCTIVITY IN THIN TRANSITION-METAL FILMS: ITS SUPPRESSION BY REDUCED DIMENSIONALITY AND LOCALIZATION.

Abstract

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