Thermal conductivity of NbSe3 |
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Authors: | J.W. Brill C.P. Tzou G. Verma N.P. Ong |
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Affiliation: | 1. Department of Physics, University of Southern California, Los Angeles, CA 90007, USA;2. Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 USA |
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Abstract: | The thermal conductivity, κ, of NbSe3 has been measured by novel self-heating techniques that allowed the electric field dependence of κ to also be measured. Measurements were made from 35 K to room temperature. Above the charge density wave transitions, the phonon thermal conductivity is 4–7 times the electron thermal conductivity, and it rises smoothly below the transitions, indicating that phonon-phonon scattering predominates. Phonon mean free parths have been estimated at 187 A° at 60 K and 60 A° at 150 K. No clear anomalies were observed at the phase transitions, giving upper limits to changes in the phonon mean free path. No field dependence of κ was observed. |
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