Off-axis laser deposition of YBa2Cu3O7-δ thin films

Off-axis laser deposition of YBa2Cu3O7-δ thin films

We report on YBa2Cu3O7−δ thin-film preparation by a new laser deposition geometry, the so-called off-axis laser deposition. Combined with radiation-based substrate heating, this results in c-axis oriented, epitaxial YBa2Cu3O7−δ thin films with critical current densities above 106 A/cm2 at 77 K and z...

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Veröffentlicht in:Applied physics letters 1992-12, Vol.61 (26), p.3178-3180
Hauptverfasser: HOLZAPFEL, B, ROAS, B, SCHULTZ, L, BAUER, P, SAEMANN-ISCHENKO, G
Format: Artikel
Sprache:eng
Schlagworte:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Superconducting films and low-dimensional structures
Superconductivity
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Zusammenfassung:We report on YBa2Cu3O7−δ thin-film preparation by a new laser deposition geometry, the so-called off-axis laser deposition. Combined with radiation-based substrate heating, this results in c-axis oriented, epitaxial YBa2Cu3O7−δ thin films with critical current densities above 106 A/cm2 at 77 K and zero field and an exceptionally good surface quality, with complete absence of the otherwise observed laser droplets. As proved by atomic force microscopy, the surface roughness is
ISSN:0003-6951
1077-3118
DOI:10.1063/1.107951