Crystal structure and superconductivity of (La,Sr) sub 2 CuO sub 4 /Sm sub 2 CuO sub 4 superlattices prepared by excimer laser deposition
Abstract
We have grown superlattices of (La,Sr){sub 2}CuO{sub 4}/Sm{sub 2}CuO{sub 4} (1/1 to 120/120) onto SrTiO{sub 3} substrates by an excimer laser deposition technique. These superlattices can be classified into three regions. For the short periodicity of the stacking up to 4/4, new structures are constructed having a large unit cell made of a CuO{sub 5} pyramid, CuO{sub 6} octahedral, and CuO{sub 4} sheet. For the large periodicity more than 60/60, the superlattices exhibit the same superconducting behavior as the standard (La,Sr){sub 2}CuO{sub 4}. The superlattices of the intermediate periodicity, from 60/60 to 15/15 on the other hand, show changes in the critical temperature as the variation of the stacking periodicity. This phenomenon is explained to be derived from a pressure effect caused by a lattice mismatch between (La,Sr){sub 2}CuO{sub 4} and Sm{sub 2}CuO{sub 4} layers.
- Authors:
-
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567, Japan (JP)
- Publication Date:
- OSTI Identifier:
- 5735801
- Resource Type:
- Journal Article
- Journal Name:
- Applied Physics Letters; (USA)
- Additional Journal Information:
- Journal Volume: 58:13; Journal ID: ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; COPPER OXIDES; CRYSTAL STRUCTURE; SUPERCONDUCTIVITY; LANTHANUM OXIDES; SAMARIUM OXIDES; STRONTIUM OXIDES; EPITAXY; HIGH-TC SUPERCONDUCTORS; LASER RADIATION; SUPERCONDUCTING FILMS; SUPERLATTICES; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; FILMS; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; RARE EARTH COMPOUNDS; SAMARIUM COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; 360202* - Ceramics, Cermets, & Refractories- Structure & Phase Studies; 360204 - Ceramics, Cermets, & Refractories- Physical Properties
Citation Formats
Tabata, H, Kawai, T, and Kawai, S. Crystal structure and superconductivity of (La,Sr) sub 2 CuO sub 4 /Sm sub 2 CuO sub 4 superlattices prepared by excimer laser deposition. United States: N. p., 1991.
Web. doi:10.1063/1.105193.
Tabata, H, Kawai, T, & Kawai, S. Crystal structure and superconductivity of (La,Sr) sub 2 CuO sub 4 /Sm sub 2 CuO sub 4 superlattices prepared by excimer laser deposition. United States. https://doi.org/10.1063/1.105193
Tabata, H, Kawai, T, and Kawai, S. 1991.
"Crystal structure and superconductivity of (La,Sr) sub 2 CuO sub 4 /Sm sub 2 CuO sub 4 superlattices prepared by excimer laser deposition". United States. https://doi.org/10.1063/1.105193.
@article{osti_5735801,
title = {Crystal structure and superconductivity of (La,Sr) sub 2 CuO sub 4 /Sm sub 2 CuO sub 4 superlattices prepared by excimer laser deposition},
author = {Tabata, H and Kawai, T and Kawai, S},
abstractNote = {We have grown superlattices of (La,Sr){sub 2}CuO{sub 4}/Sm{sub 2}CuO{sub 4} (1/1 to 120/120) onto SrTiO{sub 3} substrates by an excimer laser deposition technique. These superlattices can be classified into three regions. For the short periodicity of the stacking up to 4/4, new structures are constructed having a large unit cell made of a CuO{sub 5} pyramid, CuO{sub 6} octahedral, and CuO{sub 4} sheet. For the large periodicity more than 60/60, the superlattices exhibit the same superconducting behavior as the standard (La,Sr){sub 2}CuO{sub 4}. The superlattices of the intermediate periodicity, from 60/60 to 15/15 on the other hand, show changes in the critical temperature as the variation of the stacking periodicity. This phenomenon is explained to be derived from a pressure effect caused by a lattice mismatch between (La,Sr){sub 2}CuO{sub 4} and Sm{sub 2}CuO{sub 4} layers.},
doi = {10.1063/1.105193},
url = {https://www.osti.gov/biblio/5735801},
journal = {Applied Physics Letters; (USA)},
issn = {0003-6951},
number = ,
volume = 58:13,
place = {United States},
year = {Mon Apr 01 00:00:00 EST 1991},
month = {Mon Apr 01 00:00:00 EST 1991}
}