Studies of the surface structure of YBa2Cu3O7 thin films using STM

I. Maggio-Aprile; A. D. Kent; Ph Niedermann; Ch Renner; L. Antognazza; L. Miéville; O. Brunner; J. M. Triscone; Fischer

doi:10.1016/0304-3991(92)90349-O

Studies of the surface structure of YBa₂Cu₃O₇ thin films using STM

I. Maggio-Aprile, A. D. Kent, Ph Niedermann, Ch Renner, L. Antognazza, L. Miéville, O. Brunner, J. M. Triscone, Fischer

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

Abstract

The surface structure of magnetron-sputtered YBa₂Cu₃O₇ thin films has been investigated using an STM operated in air. Both c-axis and a-axis oriented films have been investigated. In the case of c-axis thin films, different types of step and plateau structures are observed depending on the deposition conditions and substrates used (SrTiO₃ and MgO), suggesting different growth behavior. In some cases, very regularly spaced parallel plateaus separated by steps are found, suggesting directional step flow; whereas in other cases, more complex surface structures with circular plateaus and screw dislocations are seen. In the case of a-axis growth, the substrate determines the grain orientation and results in a cobblestone appearance of the film surface. The tunneling conditions necessary for obtaining stable and reproducible images of the surface are discussed as well as attempts to correlate the deposition parameters with the resulting film surface structure.

Original language	English (US)
Pages (from-to)	728-733
Number of pages	6
Journal	Ultramicroscopy
Volume	42-44
Issue number	PART 1
DOIs	https://doi.org/10.1016/0304-3991(92)90349-O
State	Published - Jul 1992

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Instrumentation

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title = "Studies of the surface structure of YBa2Cu3O7 thin films using STM",

abstract = "The surface structure of magnetron-sputtered YBa2Cu3O7 thin films has been investigated using an STM operated in air. Both c-axis and a-axis oriented films have been investigated. In the case of c-axis thin films, different types of step and plateau structures are observed depending on the deposition conditions and substrates used (SrTiO3 and MgO), suggesting different growth behavior. In some cases, very regularly spaced parallel plateaus separated by steps are found, suggesting directional step flow; whereas in other cases, more complex surface structures with circular plateaus and screw dislocations are seen. In the case of a-axis growth, the substrate determines the grain orientation and results in a cobblestone appearance of the film surface. The tunneling conditions necessary for obtaining stable and reproducible images of the surface are discussed as well as attempts to correlate the deposition parameters with the resulting film surface structure.",

author = "I. Maggio-Aprile and Kent, {A. D.} and Ph Niedermann and Ch Renner and L. Antognazza and L. Mi{\'e}ville and O. Brunner and Triscone, {J. M.} and Fischer",

year = "1992",

month = jul,

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AU - Maggio-Aprile, I.

AU - Kent, A. D.

AU - Niedermann, Ph

AU - Renner, Ch

AU - Antognazza, L.

AU - Miéville, L.

AU - Brunner, O.

AU - Triscone, J. M.

AU - Fischer,

PY - 1992/7

Y1 - 1992/7

N2 - The surface structure of magnetron-sputtered YBa2Cu3O7 thin films has been investigated using an STM operated in air. Both c-axis and a-axis oriented films have been investigated. In the case of c-axis thin films, different types of step and plateau structures are observed depending on the deposition conditions and substrates used (SrTiO3 and MgO), suggesting different growth behavior. In some cases, very regularly spaced parallel plateaus separated by steps are found, suggesting directional step flow; whereas in other cases, more complex surface structures with circular plateaus and screw dislocations are seen. In the case of a-axis growth, the substrate determines the grain orientation and results in a cobblestone appearance of the film surface. The tunneling conditions necessary for obtaining stable and reproducible images of the surface are discussed as well as attempts to correlate the deposition parameters with the resulting film surface structure.

AB - The surface structure of magnetron-sputtered YBa2Cu3O7 thin films has been investigated using an STM operated in air. Both c-axis and a-axis oriented films have been investigated. In the case of c-axis thin films, different types of step and plateau structures are observed depending on the deposition conditions and substrates used (SrTiO3 and MgO), suggesting different growth behavior. In some cases, very regularly spaced parallel plateaus separated by steps are found, suggesting directional step flow; whereas in other cases, more complex surface structures with circular plateaus and screw dislocations are seen. In the case of a-axis growth, the substrate determines the grain orientation and results in a cobblestone appearance of the film surface. The tunneling conditions necessary for obtaining stable and reproducible images of the surface are discussed as well as attempts to correlate the deposition parameters with the resulting film surface structure.

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JO - Ultramicroscopy

JF - Ultramicroscopy

IS - PART 1

ER -

Studies of the surface structure of YBa₂Cu₃O₇ thin films using STM

Abstract

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