Itinerant ferromagnetism and geometrically suppressed metal-insulator transition in epitaxial thin films of Ca 2RuO 4

Ludi Miao, Punam Silwal, Xiaolan Zhou, Ilan Stern, Jin Peng, Wenyong Zhang, Leonard Spinu, Zhiqiang Mao, Dae Ho Kim

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Abstract

We have investigated the effect of epitaxial strain on the electrical and magnetic properties of high quality Ca 2RuO 4 films on LaAlO 3 (001) substrates. The films exhibit low temperature itinerant ferromagnetic ground state and significantly suppressed metal-insulator transition due to epitaxial strain. An anomaly in the in-plane resistivity was also observed near the Néel temperature. Symmetry analysis of anisotropic magnetoresistance suggests a phase coexistence of ferromagnetic metal and antiferromagnetic insulator in ground state.

Original languageEnglish (US)
Article number052401
JournalApplied Physics Letters
Volume100
Issue number5
DOIs
StatePublished - Jan 30 2012

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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