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Title: Observation of second sound in graphite at temperatures above 100 K

Abstract

Wavelike thermal transport in solids, referred to as second sound, is an exotic phenomenon previously limited to a handful of materials at low temperatures. The rare occurrence of this effect restricted its scientific and practical importance. We directly observed second sound in graphite at temperatures above 100 kelvins by using time-resolved optical measurements of thermal transport on the micrometer-length scale. Our experimental results are in qualitative agreement with ab initio calculations that predict wavelike phonon hydrodynamics. We believe that these results potentially indicate an important role of second sound in microscale transient heat transport in two-dimensional and layered materials in a wide temperature range.


Citation Formats

Huberman, S., Duncan, R. A., Chen, K., Song, B., Chiloyan, V., Ding, Z., Maznev, A. A., Chen, G., and Nelson, K. A. Observation of second sound in graphite at temperatures above 100 K. United States: N. p., 2019. Web. doi:10.1126/science.aav3548.
Huberman, S., Duncan, R. A., Chen, K., Song, B., Chiloyan, V., Ding, Z., Maznev, A. A., Chen, G., & Nelson, K. A. Observation of second sound in graphite at temperatures above 100 K. United States. doi:10.1126/science.aav3548.
Huberman, S., Duncan, R. A., Chen, K., Song, B., Chiloyan, V., Ding, Z., Maznev, A. A., Chen, G., and Nelson, K. A. Thu . "Observation of second sound in graphite at temperatures above 100 K". United States. doi:10.1126/science.aav3548.
@article{osti_1547634,
title = {Observation of second sound in graphite at temperatures above 100 K},
author = {Huberman, S. and Duncan, R. A. and Chen, K. and Song, B. and Chiloyan, V. and Ding, Z. and Maznev, A. A. and Chen, G. and Nelson, K. A.},
abstractNote = {Wavelike thermal transport in solids, referred to as second sound, is an exotic phenomenon previously limited to a handful of materials at low temperatures. The rare occurrence of this effect restricted its scientific and practical importance. We directly observed second sound in graphite at temperatures above 100 kelvins by using time-resolved optical measurements of thermal transport on the micrometer-length scale. Our experimental results are in qualitative agreement with ab initio calculations that predict wavelike phonon hydrodynamics. We believe that these results potentially indicate an important role of second sound in microscale transient heat transport in two-dimensional and layered materials in a wide temperature range.},
doi = {10.1126/science.aav3548},
journal = {Science},
number = 6438,
volume = 364,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aav3548

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Cited by: 2 works
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