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Issue 40, 2015
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Ruthenium oxide as a thermoelectric material: unconventional thermoelectric properties of Li2RuO3

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Abstract

Ruthenium oxides are typical strongly correlated electron systems, where various ordering phenomena occur through delicate interplay among the charge, spin and orbital degrees of freedom. We propose that the thermoelectric properties can be improved by controlling such ordered phases in strongly correlated electron systems. Honeycomb Ru oxide Li2RuO3 is a prime example that exhibits a unique phase transition at 540 K with a charge gap. We have found that the ordered state can be modified by substituting the Ru site partially, and succeeded in increasing the thermopower by keeping the resistivity around the same value to enhance the power factor substantially.

Graphical abstract: Ruthenium oxide as a thermoelectric material: unconventional thermoelectric properties of Li2RuO3

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Publication details

The article was received on 03 Jun 2015, accepted on 19 Jun 2015 and first published on 19 Jun 2015


Article type: Paper
DOI: 10.1039/C5TC01619C
Citation: J. Mater. Chem. C, 2015,3, 10430-10435

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    Ruthenium oxide as a thermoelectric material: unconventional thermoelectric properties of Li2RuO3

    I. Terasaki, S. Abe, Y. Yasui, R. Okazaki and H. Taniguchi, J. Mater. Chem. C, 2015, 3, 10430
    DOI: 10.1039/C5TC01619C

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