Description
High-fluence pulsed laser deposition expands the accessible growth window for 50 nm-thick YBa2Cu3O7−δ (YBCO) films grown on (100) SrTiO3 (STO) substrates. By employing elevated laser fluence, high-quality films are obtained across a broad 40 mm target-to-substrate distance (TSD) range, substantially relaxing the growth constraints typically associated with thin YBCO film fabrication. Remarkably, minimal variations in surface morphology, c-axis lattice parameter, and superconducting properties are observed across the entire TSD range. Notably, the resulting films exhibit smoother, more homogeneous surfaces while retaining critical temperatures and critical current densities comparable to those of thicker films grown at corresponding TSDs under otherwise identical deposition conditions [13]. These findings demonstrate that high-fluence growth substantially broadens the high quality growth window of 50 nm thick YBCO thin-films, enabling reproducible superconducting performance across a broad range. This approach offers a scalable route toward next-generation electronic and quantum technologies without requiring complex growth strategies, engineered defect landscapes, or additional fabrication techniques.
| I am the presenting author | Yes |
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