Phonons in single-layer and few-layer MoS<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow/><mml:mn>2</mml:mn></mml:msub></mml:math>and WS<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow/><mml:mn>2</mml:mn></mml:msub></mml:math>

Molina‐Sánchez, Alejandro; Wirtz, Ludger

doi:10.1103/physrevb.84.155413

Public

Phonons in single-layer and few-layer MoS2and WS2

Published in Physical Review B • Oct 11, 2011

Authors:

Alejandro Molina‐Sánchez

Ludger Wirtz

Abstract

We report ab initio calculations of the phonon dispersion relations of the single-layer and bulk dichalcogenides MoS${}_{2}$ and WS${}_{2}$. We explore in detail the behavior of the Raman-active modes ${A}_{1g}$ and ${E}_{2g}^{1}$ as a function of the number of layers. In agreement with recent Raman...

Subject

Raman spectroscopy

Phonon

Coulomb

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