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Cepellotti A, Fugallo G, Paulatto L, et al. Phonon hydrodynamics in two-dimensional materials. Nat Commun. 2015;6:6400doi: 10.1038/ncomms7400.
Cepellotti, A., Fugallo, G., Paulatto, L., Lazzeri, M., Mauri, F., & Marzari, N. (2015). Phonon hydrodynamics in two-dimensional materials. Nature communications, 66400. https://doi.org/10.1038/ncomms7400
Cepellotti, Andrea, et al. "Phonon hydrodynamics in two-dimensional materials." Nature communications vol. 6 (2015): 6400. doi: https://doi.org/10.1038/ncomms7400
Cepellotti A, Fugallo G, Paulatto L, Lazzeri M, Mauri F, Marzari N. Phonon hydrodynamics in two-dimensional materials. Nat Commun. 2015 Mar 06;6:6400. doi: 10.1038/ncomms7400. PMID: 25744932.
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Nat Commun. 2015 Mar 06;6:6400. doi: 10.1038/ncomms7400.

Phonon hydrodynamics in two-dimensional materials.

Nature communications

Andrea Cepellotti, Giorgia Fugallo, Lorenzo Paulatto, Michele Lazzeri, Francesco Mauri, Nicola Marzari

Affiliations

  1. 1] Theory and Simulations of Materials (THEOS), École Polytechnique Fédérale de Lausanne, Station 12, 1015 Lausanne, Switzerland [2] National Center for Computational Design and Discovery of Novel Materials (MARVEL), École Polytechnique Fédérale de Lausanne, Station 12, 1015 Lausanne, Switzerland.
  2. 1] Theory and Simulations of Materials (THEOS), École Polytechnique Fédérale de Lausanne, Station 12, 1015 Lausanne, Switzerland [2] Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie (IMPMC), Sorbonne Universités, UPMC University Paris 06, UMR CNRS 7590, Muséum National d'Histoire Naturelle, IRD UMR 206, 4 Place Jussieu, F-75005 Paris, France.
  3. Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie (IMPMC), Sorbonne Universités, UPMC University Paris 06, UMR CNRS 7590, Muséum National d'Histoire Naturelle, IRD UMR 206, 4 Place Jussieu, F-75005 Paris, France.

PMID: 25744932 DOI: 10.1038/ncomms7400

Abstract

The conduction of heat in two dimensions displays a wealth of fascinating phenomena of key relevance to the scientific understanding and technological applications of graphene and related materials. Here, we use density-functional perturbation theory and an exact, variational solution of the Boltzmann transport equation to study fully from first-principles phonon transport and heat conductivity in graphene, boron nitride, molybdenum disulphide and the functionalized derivatives graphane and fluorographene. In all these materials, and at variance with typical three-dimensional solids, normal processes keep dominating over Umklapp scattering well-above cryogenic conditions, extending to room temperature and more. As a result, novel regimes emerge, with Poiseuille and Ziman hydrodynamics, hitherto typically confined to ultra-low temperatures, characterizing transport at ordinary conditions. Most remarkably, several of these two-dimensional materials admit wave-like heat diffusion, with second sound present at room temperature and above in graphene, boron nitride and graphane.

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