Self-ordering of random intercalates in thin films of cuprate superconductors: Growth model and x-ray diffraction diagnosis
- Laboratory of X-ray, EPFL SB-IPMC-LPRX, CH-1015 Lausanne (Switzerland)
We propose a simple model for the nucleation of random intercalates during the growth of high-temperature superconductor (HTSC) films by pulsed laser deposition (PLD). The model predicts a very particular spatial distribution of defects: a Markovian-like sequence of displacements along the growth direction (c axis), as well as a two-component in-plane correlation function, characteristic of self-organized intercalates. A model for x-ray diffraction (XRD) on such structures is also developed and accounts for both c-axis and in-plane anomalies observed in XRD experiments. The method presented in this work constitutes a useful characterization tool in the optimization of deposition parameters for the growth of HTSC films.
- OSTI ID:
- 20951419
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 18; Other Information: DOI: 10.1103/PhysRevB.75.184505; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH COMPOUNDS
CLATHRATES
CORRELATION FUNCTIONS
CUPRATES
DEFECTS
ENERGY BEAM DEPOSITION
HIGH-TC SUPERCONDUCTORS
LASER RADIATION
MARKOV PROCESS
NUCLEATION
OPTIMIZATION
PULSED IRRADIATION
RANDOMNESS
SPATIAL DISTRIBUTION
STRONTIUM COMPOUNDS
THIN FILMS
X-RAY DIFFRACTION