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Superconducting Transition Temperature in YBa2Cu4O8/La2/3 Ca1/3 MnO3 / YBa2 Cu4O8 Heterostructure |
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| Authors: | Kun Hongkuen Wong |
| Affiliation: | aBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;bInternational Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China;cDepartment of Physics, Chinese University of Hong Kong, Hong Kong, China |
| Abstract: | YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8 (Y-124/LCMO/Y-124) heterostructure was prepared by facing-target sputtering technique. The oscillatory superconducting transition temperature was observed when the thickness of LCMO dL is larger than critical thickness dLCR. The metal-insulator transition temperature can only be detected at dL＞dLCR. The dependence on the spacer layer in LCMO/Y-124 systems suggests strongly the interplay of ferromagnetic and superconducting couplings. |
| Keywords: | high-TC films colossal magnetoresistance heterostructure interlayer coupling rare earths |
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