Abstract
Fully oxidized YBa{sub 2}Cu{sub 3}O{sub 7} thin films were prepared by pulsed laser deposition. By variation of the deposition temperature, in particular between 500 and 550 deg. C, the properties of the films range from insulating to superconducting. Since the stoichiometry of the films is identical the occurrence or non-occurrence of superconductivity can be attributed mainly to microstructural changes. To examine the structural differences, the films were characterized by transmission electron microscopy. HREM and ED measurements reveal that thin films consist of coherent connected small domains showing the original layered structure of Y and Ba-atoms. The c-axis of the domains is oriented perpendicular or parallel to the substrate surface, respectively. The domain size is reduced to a few nm by decrease of the deposition temperature. A correlation between the structural and superconducting properties becomes obvious: the film with the nm-sized ordering does not show any superconductivity while the film with a domain size variation from 10 to 200 nm shows a broad transition from 30 K down to 5 K.
Citation Formats
Koehler, Anke, Zandbergen, Henny W, Linzen, Sven, and Seidel, Paul.
Microstructural changes causing a superconductor to insulator transition in YBa{sub 2}Cu{sub 3}O{sub 7} thin films.
Netherlands: N. p.,
2004.
Web.
doi:10.1016/j.physc.2004.03.215.
Koehler, Anke, Zandbergen, Henny W, Linzen, Sven, & Seidel, Paul.
Microstructural changes causing a superconductor to insulator transition in YBa{sub 2}Cu{sub 3}O{sub 7} thin films.
Netherlands.
https://doi.org/10.1016/j.physc.2004.03.215
Koehler, Anke, Zandbergen, Henny W, Linzen, Sven, and Seidel, Paul.
2004.
"Microstructural changes causing a superconductor to insulator transition in YBa{sub 2}Cu{sub 3}O{sub 7} thin films."
Netherlands.
https://doi.org/10.1016/j.physc.2004.03.215.
@misc{etde_20618387,
title = {Microstructural changes causing a superconductor to insulator transition in YBa{sub 2}Cu{sub 3}O{sub 7} thin films}
author = {Koehler, Anke, Zandbergen, Henny W, Linzen, Sven, and Seidel, Paul}
abstractNote = {Fully oxidized YBa{sub 2}Cu{sub 3}O{sub 7} thin films were prepared by pulsed laser deposition. By variation of the deposition temperature, in particular between 500 and 550 deg. C, the properties of the films range from insulating to superconducting. Since the stoichiometry of the films is identical the occurrence or non-occurrence of superconductivity can be attributed mainly to microstructural changes. To examine the structural differences, the films were characterized by transmission electron microscopy. HREM and ED measurements reveal that thin films consist of coherent connected small domains showing the original layered structure of Y and Ba-atoms. The c-axis of the domains is oriented perpendicular or parallel to the substrate surface, respectively. The domain size is reduced to a few nm by decrease of the deposition temperature. A correlation between the structural and superconducting properties becomes obvious: the film with the nm-sized ordering does not show any superconductivity while the film with a domain size variation from 10 to 200 nm shows a broad transition from 30 K down to 5 K.}
doi = {10.1016/j.physc.2004.03.215}
journal = []
issue = {3-4}
volume = {408-410}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Aug}
}
title = {Microstructural changes causing a superconductor to insulator transition in YBa{sub 2}Cu{sub 3}O{sub 7} thin films}
author = {Koehler, Anke, Zandbergen, Henny W, Linzen, Sven, and Seidel, Paul}
abstractNote = {Fully oxidized YBa{sub 2}Cu{sub 3}O{sub 7} thin films were prepared by pulsed laser deposition. By variation of the deposition temperature, in particular between 500 and 550 deg. C, the properties of the films range from insulating to superconducting. Since the stoichiometry of the films is identical the occurrence or non-occurrence of superconductivity can be attributed mainly to microstructural changes. To examine the structural differences, the films were characterized by transmission electron microscopy. HREM and ED measurements reveal that thin films consist of coherent connected small domains showing the original layered structure of Y and Ba-atoms. The c-axis of the domains is oriented perpendicular or parallel to the substrate surface, respectively. The domain size is reduced to a few nm by decrease of the deposition temperature. A correlation between the structural and superconducting properties becomes obvious: the film with the nm-sized ordering does not show any superconductivity while the film with a domain size variation from 10 to 200 nm shows a broad transition from 30 K down to 5 K.}
doi = {10.1016/j.physc.2004.03.215}
journal = []
issue = {3-4}
volume = {408-410}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Aug}
}