Temperature-dependent phonon shifts in monolayer MoS2
- 26 August 2013
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 103 (9), 093102
- https://doi.org/10.1063/1.4819337
Abstract
We present a combined experimental and computational study of two-dimensional molybdenum disulfide and the effect of temperature on the frequency shifts of the Raman-active and modes in the monolayer. While both peaks show an expected red-shift with increasing temperature, the frequency shift is larger for the mode than for the mode. This is in contrast to previously reported bulk behavior, in which the mode shows a larger frequency shift with temperature. The temperature dependence of these phonon shifts is attributed to the anharmonic contributions to the ionic interaction potential in the two-dimensional system.
Keywords
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