Scanning tunneling microscopy of pulsed-laser-deposited YBa2Cu3O7- epitaxial thin films: Surface microstructure and growth mechanism

David P. Norton; Douglas H. Lowndes; X. Y. Zheng; Shen Zhu; R. J. Warmack

doi:10.1103/PhysRevB.44.9760

Scanning tunneling microscopy of pulsed-laser-deposited YBa2Cu3O7- epitaxial thin films: Surface microstructure and growth mechanism

David P. Norton, Douglas H. Lowndes, X. Y. Zheng, Shen Zhu, R. J. Warmack

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

63 Scopus citations

Abstract

Scanning tunneling microscopy suggests that epitaxial YBa2Cu3O7- thin films grow unit cell by unit cell, by a terraced-island-growth mode. Although films grown at low temperatures exhibit a spiral-growth surface microstructure, films with high critical current densities (grown at high temperatures on nearly-lattice-matched substrates) do not. The terraced microstructure explains the steps found in ultrathin YBa2Cu3O7- layers in YBa2Cu3O7-/PrBa2Cu3O7- superlattices. These steps may act as superconducting weak links, providing support for Josephson-coupled-array models of superconducting superlattices.

Original language	English
Pages (from-to)	9760-9763
Number of pages	4
Journal	Physical Review B
Volume	44
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.44.9760
State	Published - 1991
Externally published	Yes

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title = "Scanning tunneling microscopy of pulsed-laser-deposited YBa2Cu3O7- epitaxial thin films: Surface microstructure and growth mechanism",

abstract = "Scanning tunneling microscopy suggests that epitaxial YBa2Cu3O7- thin films grow unit cell by unit cell, by a terraced-island-growth mode. Although films grown at low temperatures exhibit a spiral-growth surface microstructure, films with high critical current densities (grown at high temperatures on nearly-lattice-matched substrates) do not. The terraced microstructure explains the steps found in ultrathin YBa2Cu3O7- layers in YBa2Cu3O7-/PrBa2Cu3O7- superlattices. These steps may act as superconducting weak links, providing support for Josephson-coupled-array models of superconducting superlattices.",

author = "Norton, {David P.} and Lowndes, {Douglas H.} and Zheng, {X. Y.} and Shen Zhu and Warmack, {R. J.}",

year = "1991",

doi = "10.1103/PhysRevB.44.9760",

language = "English",

volume = "44",

pages = "9760--9763",

journal = "Physical Review B",

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T1 - Scanning tunneling microscopy of pulsed-laser-deposited YBa2Cu3O7- epitaxial thin films

T2 - Surface microstructure and growth mechanism

AU - Norton, David P.

AU - Lowndes, Douglas H.

AU - Zheng, X. Y.

AU - Zhu, Shen

AU - Warmack, R. J.

PY - 1991

Y1 - 1991

N2 - Scanning tunneling microscopy suggests that epitaxial YBa2Cu3O7- thin films grow unit cell by unit cell, by a terraced-island-growth mode. Although films grown at low temperatures exhibit a spiral-growth surface microstructure, films with high critical current densities (grown at high temperatures on nearly-lattice-matched substrates) do not. The terraced microstructure explains the steps found in ultrathin YBa2Cu3O7- layers in YBa2Cu3O7-/PrBa2Cu3O7- superlattices. These steps may act as superconducting weak links, providing support for Josephson-coupled-array models of superconducting superlattices.

AB - Scanning tunneling microscopy suggests that epitaxial YBa2Cu3O7- thin films grow unit cell by unit cell, by a terraced-island-growth mode. Although films grown at low temperatures exhibit a spiral-growth surface microstructure, films with high critical current densities (grown at high temperatures on nearly-lattice-matched substrates) do not. The terraced microstructure explains the steps found in ultrathin YBa2Cu3O7- layers in YBa2Cu3O7-/PrBa2Cu3O7- superlattices. These steps may act as superconducting weak links, providing support for Josephson-coupled-array models of superconducting superlattices.

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DO - 10.1103/PhysRevB.44.9760

M3 - Article

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VL - 44

SP - 9760

EP - 9763

JO - Physical Review B

JF - Physical Review B

IS - 17

ER -

Scanning tunneling microscopy of pulsed-laser-deposited YBa2Cu3O7- epitaxial thin films: Surface microstructure and growth mechanism

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