Proximity and reversal magnetoresistance behaviour in the oxide heterostructure of cuprate and manganite
| Autor: | Lian-Mao Peng, XM(重点实验室）) Xie, Bernhard Holzapfel, Zhiyong Liu, Y. M. Lu, CZ Chen, Chuanbing Cai |
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| Rok vydání: | 2010 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Magnetoresistance Magnetism Metals and Alloys Giant magnetoresistance Condensed Matter Physics Manganite Condensed Matter::Materials Science Meissner effect Condensed Matter::Superconductivity Materials Chemistry Ceramics and Composites Proximity effect (superconductivity) Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering Type-II superconductor |
| Zdroj: | Superconductor Science and Technology. 23:034010 |
| ISSN: | 1361-6668 0953-2048 |
| DOI: | 10.1088/0953-2048/23/3/034010 |
| Popis: | In this paper, the oxide bilayer and trilayer consisting of superconducting cuprate and antiferromagnetic manganite are prepared using the technique of pulsed-laser deposition. Magnetic hysteresis loops at different temperatures and magnetic fields show distinct magnetic performances due to the proximity and interplay between Meissner currents in the YBCO layer as well as the magnetic fields emerging in the antiferromagnetic manganite layer. A giant positive magnetoresistance (MR) for the trilayers is clearly demonstrated in the region of mixed vortex states near the onset temperature of the superconducting transition. It is believed that the observed positive MR should be associated with the thermally activated flux dissipation, while the spin-dependent interface scattering due to the existing proximity effect may play a more significant role. |
| Databáze: | OpenAIRE |
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