2026-06-27T22:59:26Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/596172024-08-30T14:56:35Zcom_20.500.14352_14col_20.500.14352_15

Direct correlation between T_(c) and CuO_(2) bilayer spacing in YBa_(2)Cu_(3)O_(7-x) Varela Del Arco, María Arias Serna, Diego Sefrioui, Zouhair León Yebra, Carlos Ballesteros, C. Pennycook, S. J. Santamaría Sánchez-Barriga, Jacobo © 2002 The American Physical Society. This work was supported by CICYT MAT2000-1468, Fundación Ramón Areces and CAM07N/0008/2001. 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. 2023-06-20T20:07:33Z 2023-06-20T20:07:33Z 2002-10-01 journal article 1098-0121 10.1103/PhysRevB.66.134517 https://hdl.handle.net/20.500.14352/59617 http://dx.doi.org/10.1103/PhysRevB.66.134517 http://journals.aps.org/ eng MAT2000-1468 CAM07N/0008/2001 open access American Physical Society