RT Journal Article T1 Direct correlation between T_(c) and CuO_(2) bilayer spacing in YBa_(2)Cu_(3)O_(7-x) A1 Varela Del Arco, María A1 Arias Serna, Diego A1 Sefrioui, Zouhair A1 León Yebra, Carlos A1 Ballesteros, C. A1 Pennycook, S. J. A1 Santamaría Sánchez-Barriga, Jacobo AB We report the effects of epitaxial strain and deoxygenation on high quality [YBa_(2)Cu_(3)O_(7-x)(YBCO)_(N) /PrBa_(2)Cu_(3)O_(7)(PBCO)_(5)]_(1000 Å) superlattices, with 1 < N < 12 unit cells. High-spatialresolution electron energy loss spectroscopy shows that strained, fully oxygenated YBCO layers are underdoped. Irrespective of whether underdoping is induced by strain or deoxygenation, x-ray diffraction analysis shows that T_(c) correlates directly with separation of the CuO_(2) bilayers. PB American Physical Society SN 1098-0121 YR 2002 FD 2002-10-01 LK https://hdl.handle.net/20.500.14352/59617 UL https://hdl.handle.net/20.500.14352/59617 LA eng NO © 2002 The American Physical Society. This work was supported by CICYT MAT2000-1468, Fundación Ramón Areces and CAM07N/0008/2001. NO CICYT NO Fundación Ramón Areces NO CAM DS Docta Complutense RD 21 abr 2025