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Issue 9, 2019
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Using nanotubes to study the phonon spectrum of two-dimensional materials

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Abstract

We propose a convenient method to characterize the acoustic phonon branches of 2D monolayer materials using measurements of the infrared- and Raman-active vibrational modes of nanotubes. The relations we employ are derived from a symmetry analysis based directly on the line groups of nanotubes. We perform extensive ab initio calculations for the MoS2 monolayer and nanotubes to evaluate the method and illustrate all our results. Specifically, we show how the low-energy phonon transmission, a determining factor in thermal transport, can be easily and successfully reconstructed by this procedure.

Graphical abstract: Using nanotubes to study the phonon spectrum of two-dimensional materials

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Publication details

The article was received on 04 Jan 2019, accepted on 06 Feb 2019 and first published on 06 Feb 2019


Article type: Paper
DOI: 10.1039/C9CP00052F
Phys. Chem. Chem. Phys., 2019,21, 5215-5223
  • Open access: Creative Commons BY license
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    Using nanotubes to study the phonon spectrum of two-dimensional materials

    J. Carrete, V. Ngoc Tuoc and G. K. H. Madsen, Phys. Chem. Chem. Phys., 2019, 21, 5215
    DOI: 10.1039/C9CP00052F

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