Atomic layer and unit cell layer growth of (Ca,Sr)CuO2thin film by laser molecular beam epitaxy
作者:
Masaki Kanai,
Tomoji Kawai,
Shichio Kawai,
期刊:
Applied Physics Letters
(AIP Available online 1991)
卷期:
Volume 58,
issue 7
页码: 771-773
ISSN:0003-6951
年代: 1991
DOI:10.1063/1.104543
出版商: AIP
数据来源: AIP
摘要:
Thin films of (Ca,Sr)CuO2, the parent material of highTccuprate superconductors, have been formed by the laser ablation method under molecular beam epitaxial condition, and the growth mechanism has been investigated with reflection high‐energy electron diffraction (RHEED). Analyses of RHEED patterns and intensity oscillations show that this material grows with two‐dimensional layer growth. When all the metal elements are supplied simultaneously in NO2atmosphere, the layer growth occurs with the unit‐cell layer of (Ca,Sr)CuO2. Furthermore, it has become evident that the growth unit can be separated into Ca (Sr) atomic layer and CuOxatomic layer by monitoring the RHEED intensity oscillation. The successive supply of each metal element leads to one atomic layer growth of this material.
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