Growth of SrxCa1−xCuO2 film and (CaCuO2)m/(SrCuO2)n superlattice by reactive sputtering

Nie, J.C. ; Sundaresan, A. ; Hayashi, A.K. ; Ishiura, Y. ; Tanaka, Y. ; Ihara, H. (2001) Growth of SrxCa1−xCuO2 film and (CaCuO2)m/(SrCuO2)n superlattice by reactive sputtering Physica C: Superconductivity, 357-36 . pp. 1407-1410. ISSN 0921-4534

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The SrxCa1−xCuO2 thin films and [CaCuO2]m/[SrCuO2]n superlattices (SLs) have been prepared by multi-target off-axis rf magnetron sputtering on treated SrTiO3 (1 0 0) with periodic step arrays of atomic control on substrate surfaces. X-ray diffraction analyses have confirmed the formation of the tetragonal, infinite layer crystal structure with c-axis orientation. The obtained SLs and the SrxCa1−xCuO2 thin films showed semiconducting behavior. The SrxCa1−xCuO2 thin films with x=0.7 had remarkable resistive anomalies around 90 K and clear Meissner signals at temperature below 45 K. For the CaCuO2/SrCuO2 artificial SLs, SL chemical modulation was observed for structures with individual layers as thin as two unit cells. The peak attributed to the SL periodicity was also observed, indicating good control of the film growth.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:120192
Deposited On:23 Jun 2021 12:28
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