Tuning Thermoelectric Properties of RuSb2 by Mn doping

ORAL

Abstract

Narrow-gap semiconductor RuSb2 is known to exhibit large thermopower, promising for thermoelectric application. However, its low electrical conductivity and high thermal conductivity lead to low figure of merit. To alter these properties, we have grown Mn-doped RuSb2 single crystals, which form an orthorhombic structure. Compared to the parent compound, 8% Mn doping results in better electrical conduction and lower thermal conductivity, while thermopower is reduced. We discuss the Mn doping effect based on both experimental results and theoretical calculations.

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Presenters

  • Hong Chang

    Department of Physics & astronomy, Louisiana state University

Authors

  • Hong Chang

    Department of Physics & astronomy, Louisiana state University

  • William Shelton

    Cain Department of Chemical Engineering, Louisiana State University, Cain Department of Chemical Engineering, Louisiana state University, Louisiana State Univ - Baton Rouge, Cain Department of Chemical Engineering , Louisiana State University

  • Xin Gui

    Department of Chemistry, Louisiana State University, Louisiana State Univ - Baton Rouge, Department of Chemistry, Louisiana state University

  • Weiwei Xie

    Department of Chemistry, Louisiana State University, Louisiana State Univ - Baton Rouge, Louisiana State Univ, Department of Chemistry, Louisiana state University, Chemistry, Lousiana State University, Department of Physics and Astronomy, Louisiana State Univ - Baton Rouge

  • Roshan Nepal

    Department of Physics & astronomy, Louisiana state University, Department of Physics and Astronomy,, Louisiana State Univ - Baton Rouge

  • Lingyi Xing

    Department of Physics and Astronomy, Louisiana State University, Department of Physics & astronomy, Louisiana state University

  • Ramakanta Chapai

    Physics and Astronomy, Louisiana State Univ - Baton Rouge, Department of Physics & astronomy, Louisiana state University

  • Rongying Jin

    Department of Physics and Astronomy, Louisiana State University, Physics and Astronomy, Louisiana State Univ - Baton Rouge, Department of Physcis and Astronomy, Louisiana State University, Department of Physics & astronomy, Louisiana state University, Department of Physics, Louisiana State University, Louisiana State Univ - Baton Rouge, Physics and Astronomy, Louisiana State University, Physics, Louisiana State Univ, Department of Physics and Astronomy,, Louisiana State Univ - Baton Rouge