Magnetic characterizations of the epitaxial Pr<sub>2</sub>Ir<sub>2</sub>O<sub>7</sub> 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