Anisotropic thermoelectric properties associated with dimensional crossover in quasi-one-dimensional SrNbO3.4+d (d∼0.03)

Wataru Kobayashi, Yasuhiro Hayashi, M. Matsushita, Y. Yamamoto, I. Terasaki, A. Nakao, H. Nakao, Y. Murakami, Y. Moritomo, H. Yamauchi, M. Karppinen

    研究成果: Article

    14 引用 (Scopus)

    抄録

    We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.

    元の言語English
    記事番号085118
    ジャーナルPhysical Review B - Condensed Matter and Materials Physics
    84
    発行部数8
    DOI
    出版物ステータスPublished - 2011 8 23

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    Thermoelectric power
    crossovers
    conductivity
    Electronic structure
    Thermal conductivity
    Anisotropy
    Single crystals
    floating
    thermal conductivity
    electronic structure
    anisotropy
    electrical resistivity
    single crystals

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    これを引用

    Anisotropic thermoelectric properties associated with dimensional crossover in quasi-one-dimensional SrNbO3.4+d (d∼0.03). / Kobayashi, Wataru; Hayashi, Yasuhiro; Matsushita, M.; Yamamoto, Y.; Terasaki, I.; Nakao, A.; Nakao, H.; Murakami, Y.; Moritomo, Y.; Yamauchi, H.; Karppinen, M.

    :: Physical Review B - Condensed Matter and Materials Physics, 巻 84, 番号 8, 085118, 23.08.2011.

    研究成果: Article

    Kobayashi, W, Hayashi, Y, Matsushita, M, Yamamoto, Y, Terasaki, I, Nakao, A, Nakao, H, Murakami, Y, Moritomo, Y, Yamauchi, H & Karppinen, M 2011, 'Anisotropic thermoelectric properties associated with dimensional crossover in quasi-one-dimensional SrNbO3.4+d (d∼0.03)', Physical Review B - Condensed Matter and Materials Physics, 巻. 84, 番号 8, 085118. https://doi.org/10.1103/PhysRevB.84.085118
    Kobayashi, Wataru ; Hayashi, Yasuhiro ; Matsushita, M. ; Yamamoto, Y. ; Terasaki, I. ; Nakao, A. ; Nakao, H. ; Murakami, Y. ; Moritomo, Y. ; Yamauchi, H. ; Karppinen, M. / Anisotropic thermoelectric properties associated with dimensional crossover in quasi-one-dimensional SrNbO3.4+d (d∼0.03). :: Physical Review B - Condensed Matter and Materials Physics. 2011 ; 巻 84, 番号 8.
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    abstract = "We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.",
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    AU - Kobayashi, Wataru

    AU - Hayashi, Yasuhiro

    AU - Matsushita, M.

    AU - Yamamoto, Y.

    AU - Terasaki, I.

    AU - Nakao, A.

    AU - Nakao, H.

    AU - Murakami, Y.

    AU - Moritomo, Y.

    AU - Yamauchi, H.

    AU - Karppinen, M.

    PY - 2011/8/23

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    N2 - We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.

    AB - We have grown large single crystals of SrNbO3.4+d (d∼0.03) with n=5 in the homologous series SrnNbnO3n+2 by using a traveling solvent floating-zone method and measured resistivity, thermopower, and thermal conductivity along all crystallographic axes. The thermoelectric properties are found to be highly anisotropic, which reflects a quasi-one-dimensional electronic structure. In particular, the thermopower along the b axis is -170 μV/K at 300 K, which is 1 order of magnitude higher than the -15 μV/K along the a axis and -25 μV/K along the c axis. A possible origin of the high anisotropy in the thermopower is discussed in terms of dimensional crossover associated with a structural modification.

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