%0 Journal Article
%A Varela Del Arco, María
%A Arias Serna, Diego
%A Sefrioui, Zouhair
%A León Yebra, Carlos
%A Ballesteros, C.
%A Pennycook, S. J.
%A Santamaría Sánchez-Barriga, Jacobo
%T Direct correlation between T_(c) and CuO_(2) bilayer spacing in YBa_(2)Cu_(3)O_(7-x)
%D 2002
%@ 1098-0121
%U https://hdl.handle.net/20.500.14352/59617
%X 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.
%~