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Electronic and Magnetic Characterization of Doped Perovskite Stannate Epitaxial Thin Films

ORAL

Abstract

La-doped BaSnO3 thin films have been identified as a promising high mobility semiconducting oxide, which could play an important role in the development of an all-oxide power electronics platform. In order to incorporate spin functionality into these materials, we explore magnetic doping of the conducting perovskite stannates. We have fabricated La and Ru doped BaSnO3 and SrSnO3 films on (001) SrTiO3 substrates grown by molecular beam epitaxy (MBE) and pulsed laser deposition (PLD). X-ray diffraction (XRD) was used to verify epitaxial growth and confirm high crystalline quality, with typical omega rocking curve FWHM of 0.05o deg. Films are optically transparent as verified by UV-vis spectrometry. They are also conductive, with room temperature mobilities up to 105 cm2/Vs, and standard carrier electronconcentrations of 1-2x1020 /cm3. Films show evidence of paramagnetism both in the field and temperature dependence of magnetization.

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Presenters

  • Emily Lindgren

    Geballe Laboratory for Advanced Materials, Stanford University

Authors

  • Emily Lindgren

    Geballe Laboratory for Advanced Materials, Stanford University

  • Hanjong Paik

    Cornell University, Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University, PARADIM, Cornell University, Platform for the Accelerated Realization, Analysis, & Discovery of Interface Materials (PARADIM), Cornell University

  • Carolina Adamo

    Geballe Laboratory for Advanced Materials, Stanford University

  • Alpha T. N'Diaye

    Lawrence Berkeley National Laboratory, Lawrence Berkeley National Lab, Advanced Light Source, Lawrence Berkeley National Laboratory, Adv Light Source LBL

  • Darrell Schlom

    Cornell University, Department of Materials Science and Engineering, Cornell University, Department of Materials Science and Engineering, Kavli Institute at Cornell for Nanoscale Science, Cornell University, Materials Science and Engineering, Cornell University, Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA, Platform for the Accelerated Realization, Analysis, & Discovery of Interface Materials (PARADIM), Cornell University

  • Yuri Suzuki

    Stanford University, Stanford Univ, Dept. of Applied Physics, Stanford University, Geballe Laboratory for Advanced Materials, Stanford University, Applied Physics, Stanford University