Observation of second sound in graphite at temperatures above 100 K
Name
1901.09160.pdf
Description
Accepted version
Size
1.8 MB
Format
Adobe PDF
Checksum (MD5)
cd1d28228ea1efe348e15a9f75bab12c
Author(s)
Huberman, Samuel C.
Duncan, Ryan Andrew
Chen, Ke
Song, Bai
Chiloyan, Vazrik
Ding, Zhiwei
Maznev, Alexei
Chen, Gang
Nelson, Keith Adam
Date Issued
April 2019
Journal
Science
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Huberman, S. et al. "Observation of second sound in graphite at temperatures above 100 K." Science 364, 6438 (April 26, 2019): 375-379 © 2019 American Association for the Advancement of Science
Version
Author's final manuscript
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.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Department of Chemistry
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1126/science.aav3548
