Atomic layer and unit cell layer growth of (Ca,Sr)CuO2 thin film by laser molecular beam epitaxy
- 18 February 1991
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 58 (7), 771-773
- https://doi.org/10.1063/1.104543
Abstract
Thin films of (Ca,Sr)CuO2, the parent material of high Tc cuprate 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 NO2 atmosphere, 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 CuOx atomic layer by monitoring the RHEED intensity oscillation. The successive supply of each metal element leads to one atomic layer growth of this material.Keywords
This publication has 9 references indexed in Scilit:
- Effect of oxidation gases on the formation of Bi2Sr2CuO6 thin filmsApplied Physics Letters, 1990
- Superconducting superlattices: Verification of two-dimensional nature in high T c Bi2Sr2(Ca1−xYx)Cu2O8 superconductorsApplied Physics Letters, 1990
- Molecular Beam Epitaxy Study of Bi2Sr2CuOx Using NO2 as an Oxidizing AgentJapanese Journal of Applied Physics, 1990
- Molecular beam epitaxial growth of layered Bi-Sr-Ca-Cu-O compoundsJournal of Crystal Growth, 1990
- Tailored thin films of a superconducting Bi-Sr-Ca-Cu oxide prepared by incorporation of exotic atoms—control of the distance between CuO2 layersApplied Physics Letters, 1990
- Y-Ba-Cu-O/Dy-Ba-Cu-O superlattices: A first step towards the artificial construction of high-superconductorsPhysical Review Letters, 1989
- Low-temperature formation of multilayered Bi(Pb)-Sr-Ca-Cu-O thin films by successive deposition using laser ablationApplied Physics Letters, 1989
- The parent structure of the layered high-temperature superconductorsNature, 1988
- Intensity oscillations of reflection high-energy electron diffraction during silicon molecular beam epitaxial growthApplied Physics Letters, 1985