Suppression of An Antiferromagnetic Insulating Phase in Sr$_{3}$(Ru$_{1-x}$Mn$_{x})_{2}$O$_{7}$ by Magnetic Field

ORAL

Abstract

Double-layered Sr$_{3}$Ru$_{2}$O$_{7 }$is a paramagnetic metal. The partial substitution of Mn for Ru results in metal-insulator transition at T$_{MIT}$ and antiferromagnetic ordering at T$_{M}$ in Sr$_{3}$(Ru$_{1-x}$Mn$_{x})_{2}$O$_{7. }$Interestingly, both T$_{MIT}$ and T$_{M}$ can be easily suppressed by the application of magnetic field, especially for low-doping compounds (x $<$ 0.1). This behavior can be explained as Mn-doping-induced antiferromagnetic-insulating domains below T$_{MIT}$. The application of magnetic field suppresses the antiferromagnetic coupling, thus converting the insulating domains back to metallic.

*Support by NSF under grant Nos. DMR-1002622 and DMR-1122603.

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Authors

  • Biao Hu

    • Louisiana State University
    • Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803
    • Dept. of Physics, Louisiana State University, Baton Rouge, LA 70802

  • E.W. Plummer

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA 70803, USA
    • Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803
    • Dept. of Physics, Louisiana State University, Baton Rouge, LA 70802

  • Rongying Jin

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA 70803, USA
    • Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803
    • Dept. of Physics, Louisiana State University, Baton Rouge, LA 70802