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

Wataru Kobayashi, Ichiro Terasaki, Masashi Mikami, Ryoji Funahashi

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)523-525
    Number of pages3
    JournalJournal of the Physical Society of Japan
    Volume73
    Issue number3
    DOIs
    Publication statusPublished - 2004 Mar

    Keywords

    • Heikes formula
    • Spin and orbital degeneracy
    • Thermoelectric power
    • Transition-metal oxide

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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