Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12

Wataru Kobayashi; Ichiro Terasaki; Masashi Mikami; Ryoji Funahashi

doi:10.1143/JPSJ.73.523

Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12

Wataru Kobayashi^*, Ichiro Terasaki, Masashi Mikami, Ryoji Funahashi

^*この研究の対応する著者

研究成果: Article › 査読

18 被引用数 (Scopus)

抄録

We have found that the thermoelectric power of the ordered perovskite CaMn_3-xCu_xMn₄O₁₂ is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu²⁺ is substituted for Mn³⁺. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.

本文言語	English
ページ（範囲）	523-525
ページ数	3
ジャーナル	Journal of the Physical Society of Japan
巻	73
号	3
DOI	https://doi.org/10.1143/JPSJ.73.523
出版ステータス	Published - 2004 3月

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1143/JPSJ.73.523

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abstract = "We have found that the thermoelectric power of the ordered perovskite CaMn3-xCuxMn4O12 is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu2+ is substituted for Mn3+. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.",

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author = "Wataru Kobayashi and Ichiro Terasaki and Masashi Mikami and Ryoji Funahashi",

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AU - Kobayashi, Wataru

AU - Terasaki, Ichiro

AU - Mikami, Masashi

AU - Funahashi, Ryoji

PY - 2004/3

Y1 - 2004/3

N2 - We have found that the thermoelectric power of the ordered perovskite CaMn3-xCuxMn4O12 is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu2+ is substituted for Mn3+. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.

AB - We have found that the thermoelectric power of the ordered perovskite CaMn3-xCuxMn4O12 is negative at high temperature (-35 μV/K at 1000 K), although this material is a hole-doped conductor in which Cu2+ is substituted for Mn3+. This is quantitatively explained by the extended Heikes formula, where entropy flows in a direction opposite to the charge.

KW - Heikes formula

KW - Spin and orbital degeneracy

KW - Thermoelectric power

KW - Transition-metal oxide

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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

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ER -

Negative thermoelectric power induced by positive carriers in CaMn 3-xCuxMn4O12

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