Universal Behaviors of the Phonon Thermal Conductivity Associated with Charge=Orbital Ordering in Transition-Metal Oxides

Takuro Katsufuji, Tetsuji Okuda, Ryuichi Murata, Tatsuya Kanzaki, Kota Takayama, Tomomasa Kajita

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    We studied the thermal transport properties of transition-metal oxides, which have partially filled t2g orbitals of transition metals and exhibit intriguing phase transitions caused by orbital=charge ordering. We found that the temperature (T) dependence of the phonon thermal conductivity κp exhibits a universal behavior for all compounds; κp(T) decreases with decreasing T above the transition temperature Tc, whereas it is enhanced below Tc. This result implies that orbital=charge ordering in transition-metal oxides can be characterized by a unique T dependence of the phonon thermal conductivity.

    Original languageEnglish
    Article number013703
    JournalJournal of the Physical Society of Japan
    Issue number1
    Publication statusPublished - 2016 Jan 15


    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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