YBa2CU3O7/PrBa2Cu3O7 superlattices: Properties of Ultrathin superconducting layers separated by insulating layers

J. M. Triscone; O. Fischer; O. Brunner; L. Antognazza; A. D. Kent; M. G. Karkut

doi:10.1103/PhysRevLett.64.804

YBa2CU3O7/PrBa2Cu3O7 superlattices: Properties of Ultrathin superconducting layers separated by insulating layers

J. M. Triscone, O. Fischer, O. Brunner, L. Antognazza, A. D. Kent, M. G. Karkut

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Abstract

We have artificially varied the coupling between ultrathin YBa2Cu3O7 layers by interposing insulating planes of PrBa2Cu3O7 in multilayers and studied the consequences of decoupling 12-A YBa2Cu3O7 unit cells on the superconducting properties. We find that the Tc (midpoint) of a 12-A/12-A multilayer is 55 K, twice that of the corresponding alloy. Tc decreases linearly with further separation of the YBa2Cu3O7 unit cells, the transition width increases and shows evidence of 2D fluctuations, and the influence of a magnetic field parallel to the layers is markedly reduced.

Original language	English (US)
Pages (from-to)	804-807
Number of pages	4
Journal	Physical Review Letters
Volume	64
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.64.804
State	Published - 1990

ASJC Scopus subject areas

General Physics and Astronomy

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title = "YBa2CU3O7/PrBa2Cu3O7 superlattices: Properties of Ultrathin superconducting layers separated by insulating layers",

abstract = "We have artificially varied the coupling between ultrathin YBa2Cu3O7 layers by interposing insulating planes of PrBa2Cu3O7 in multilayers and studied the consequences of decoupling 12-A YBa2Cu3O7 unit cells on the superconducting properties. We find that the Tc (midpoint) of a 12-A/12-A multilayer is 55 K, twice that of the corresponding alloy. Tc decreases linearly with further separation of the YBa2Cu3O7 unit cells, the transition width increases and shows evidence of 2D fluctuations, and the influence of a magnetic field parallel to the layers is markedly reduced.",

author = "Triscone, {J. M.} and O. Fischer and O. Brunner and L. Antognazza and Kent, {A. D.} and Karkut, {M. G.}",

year = "1990",

doi = "10.1103/PhysRevLett.64.804",

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AU - Fischer, O.

AU - Brunner, O.

AU - Antognazza, L.

AU - Kent, A. D.

AU - Karkut, M. G.

PY - 1990

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AB - We have artificially varied the coupling between ultrathin YBa2Cu3O7 layers by interposing insulating planes of PrBa2Cu3O7 in multilayers and studied the consequences of decoupling 12-A YBa2Cu3O7 unit cells on the superconducting properties. We find that the Tc (midpoint) of a 12-A/12-A multilayer is 55 K, twice that of the corresponding alloy. Tc decreases linearly with further separation of the YBa2Cu3O7 unit cells, the transition width increases and shows evidence of 2D fluctuations, and the influence of a magnetic field parallel to the layers is markedly reduced.

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YBa2CU3O7/PrBa2Cu3O7 superlattices: Properties of Ultrathin superconducting layers separated by insulating layers

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