Magnetic characterizations of the epitaxial Pr2Ir2O7 thin films via solid state epitaxy

ORAL

Abstract

Pyrochlore iridates (RE2Ir2O7, RE=Rare Earth) exhibit various novel electronic and magnetic properties resulting from the interplay of electronic correlation, spin-orbit coupling and geometrically frustrated spin configurations. Bulk Pr2Ir2O7 single crystals show metallic spin liquid behavior1, quantum criticality2 and a large anomalous Hall Effect without long range magnetic ordering3. Here we present the synthesis and characterization results of high-quality epitaxial Pr2Ir2O7 thin films stabilized via the solid state epitaxy method. Hall measurements reveal a low field magnetic phase transition at 30K, which is much higher than the bulk transition temperature of 1.5K4. Further magnetic effects have been observed in the Hall conductivity under higher magnetic field. We reveal the possible mechanism behind these novel magnetic behaviors by comparing the anomalous Hall behaviors with the magnetization measurements.
1. Nakatsuji, S., et al. Physical review letters 96.8 (2006): 087204.
2. Tokiwa, Y., et al. Nature materials 13.4 (2014): 356-359.
3. Machida, Yo, et al. Nature463.7278 (2010): 210-213.
4. Flint, Rebecca, and Senthil, T., PRB 87, 125147 (2013).

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Presenters

  • Lu Guo

    Univ of Wisconsin, Madison

Authors

  • Lu Guo

    Univ of Wisconsin, Madison

  • Neil Campbell

    Univ of Wisconsin, Madison, Physics, Univ of Wisconsin, Madison

  • Tianxiang Nan

    Univ of Wisconsin, Madison, Materials Science, Univ of Wisconsin, Madison

  • Xianglin Ke

    Physics and Astronomy, Michigan State University, Michigan State University

  • Mark Rzchowski

    Univ of Wisconsin, Madison, Physics, University of Wisconsin-Madison, Physics, Univ of Wisconsin, Madison, Physics, University of Wisconsin, Department of Physics, University of Wisconsin-Madison

  • Chang-Beom Eom

    University of Wisconsin-Madison, Univ of Wisconsin-Madison, Univ of Wisconsin, Madison, Department of Material Science and Engineering, University of Wisconsin-Madison, Matls Sci & Eng, University of Wisconsin-Madison, University of Wisconsin, Department of Materials Science and Engineering, University of Wisconsin-Madison, University of Wisconsin–Madison, MS&E, University of Wisconsin, Physics, University of Wisconsin–Madison, Department of Materials Science and Engineering, University of Wisconsin - Madison