Phason contribution to the thermal conductivity of CDW systems

A. Smontara, K. Biljaković, S. Artemenko, F. Lévy, H. Berger

Research Laboratory for Super High Frequency Technology

Research output: Contribution to journal › Article

Abstract

We claim that there is an additional contribution to the thermal conductivity in excess of the normal phonon and free carriers contribution in charge-density-wave (CDW) systems below Peierls transition which we attribute to the phase oscillations of (CDW) order parameter. We demonstrate for two chosen CDW systems, K_0.3MoO₃ and (NbSe₄)₁₀I₃, that the observed increase in the thermal conductivity corresponds to the temperature range where the screening of the Coulomb interactions is sufficient to allow the contribution of the weakly damped phasons with large velocity.

Original language	English
Pages (from-to)	2647-2652
Number of pages	6
Journal	Synthetic Metals
Volume	56
Issue number	2-3
DOIs	https://doi.org/10.1016/0379-6779(93)90012-L
Publication status	Published - 5 Apr 1993

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Smontara, A., Biljaković, K., Artemenko, S., Lévy, F., & Berger, H. (1993). Phason contribution to the thermal conductivity of CDW systems. Synthetic Metals, 56(2-3), 2647-2652. https://doi.org/10.1016/0379-6779(93)90012-L

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AU - Smontara, A.

AU - Biljaković, K.

AU - Artemenko, S.

AU - Lévy, F.

AU - Berger, H.

PY - 1993/4/5

Y1 - 1993/4/5

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AB - We claim that there is an additional contribution to the thermal conductivity in excess of the normal phonon and free carriers contribution in charge-density-wave (CDW) systems below Peierls transition which we attribute to the phase oscillations of (CDW) order parameter. We demonstrate for two chosen CDW systems, K0.3MoO3 and (NbSe4)10I3, that the observed increase in the thermal conductivity corresponds to the temperature range where the screening of the Coulomb interactions is sufficient to allow the contribution of the weakly damped phasons with large velocity.

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10.1016/0379-6779(93)90012-L