### Session D33: Focus Session: Complex Oxide Thin Films -- Magnetic Oxides

2:30 PM–5:18 PM, Monday, March 15, 2010
Room: E143

Chair: Mark Rzchowski, University of Wisconsin-Madison

Abstract ID: BAPS.2010.MAR.D33.7

### Abstract: D33.00007 : Oxygen Doping Study of Cuprate/Manganite Thin-Film Heterostructures

3:42 PM–3:54 PM

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#### Authors:

Hao Zhang
(Department of Physics, University of Toronto and Canadian Institute for Advanced Research)

Yi-Tang Yen
(Department of Physics, University of Toronto and Canadian Institute for Advanced Research)

John Y.T. Wei
(Department of Physics, University of Toronto and Canadian Institute for Advanced Research)

Recent studies of thin-film heterostructures comprising superconducting cuprates and ferromagnetic manganites have revealed a range of novel physical phenomena [1].~ These phenomena are believed to involve complex interfacial interactions between competing order parameters [2], and appear to be highly sensitive to the doping of carriers [3]. To further examine these phenomena, we carry out a systematic oxygen-doping study of YBa$_{2}$Cu$_{3}$O$_{6+x}$/La$_{0.67}$Ca$_{0.33}$MnO$_{3}$ multilayers, grown epitaxially by pulsed laser-ablated deposition. Our samples are characterized by electrical transport and magnetization measurements, as well as x-ray diffraction and various scanning microscopy probes.~ To assess the role of interfacial magnetism on the cuprate layer, YBa$_{2}$Cu$_{3}$O$_{6+x}$ /LaNiO$_{3}$ samples are also made and measured as a comparison.~ We also examine the effects of cation substitution in the YBa$_{2}$Cu$_{3}$O$_{6+x}$ layer, in order to determine the extent of carrier doping across the~interface.~ [1] for example, see Z. Sefrioui et al., Phys. Rev. B 67, 214511 [2] J. Hoppler et al., Nature Materials 8, 315 [3] V. Pe\~{n}a et al., Phys. Rev. Lett. 97, 177005

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.D33.7