Unusual giant anisotropic magnetoresistance in manganite strips

Manganites have been known to exhibit giant anisotropic magnetoresistance (GAMR) near metal-insulator transition temperatures. Interestingly, we observed a second GAMR peak at lower temperatures in manganite strips fabricated from epitaxial thin films. The second low-temperature GAMR peak is highly...

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Veröffentlicht in:Applied physics letters 2014-06, Vol.104 (24)
Hauptverfasser: Chen, Jinjie, Wei, Wengang, Zhang, Kai, Du, Kai, Zhu, Yinyan, Liu, Hao, Yin, Lifeng, Shen, Jian
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Sprache:eng
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Zusammenfassung:Manganites have been known to exhibit giant anisotropic magnetoresistance (GAMR) near metal-insulator transition temperatures. Interestingly, we observed a second GAMR peak at lower temperatures in manganite strips fabricated from epitaxial thin films. The second low-temperature GAMR peak is highly sensitive to magnetic field and vanishes quickly upon increasing of magnetic field. We attribute the emergent GAMR behavior to spatial confinement effect on electronic phase separation in manganite strips.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4883889