dc.contributor.author | Srivastava, GP | |
dc.contributor.author | Thomas, IO | |
dc.date.issued | 2018-07-26 | |
dc.description.abstract | Using a semi-ab-initio theoretical method we examine the temperature-dependent linewidth of the Raman modes in bulk and monolayer transition-metal dichalcogenides (TMDs) MoS2, WS2, and MoTe2. It is found that different Raman modes show different linewidths and different temperature dependencies with respect to each other for a given sample and across different TMDs. We explain these characteristics as arising from a combination of phonon density of states, Raman mode frequency, and the relative contributions of temperature-independent mass-defect scattering and temperature-dependent intrinsic anharmonic interactions. Reported measurements for samples prepared under experimental conditions have been explained by adding frequency-dependent inhomogeneity-related background contribution to our theoretical results for the pure and homogeneous samples. | en_GB |
dc.description.sponsorship | This work has been possible with funds from the Leverhulme Trust (UK) through Grant No. RPG-2016-186, which provided financial support to I.O.T. and purchase of computer nodes for carrying out numerical calculations. Calculations were performed on the Ceres cluster at the University of Exeter. | en_GB |
dc.identifier.citation | Vol. 98, article 035430 | en_GB |
dc.identifier.doi | 10.1103/PhysRevB.98.035430 | |
dc.identifier.uri | http://hdl.handle.net/10871/33804 | |
dc.language.iso | en | en_GB |
dc.publisher | American Physical Society | en_GB |
dc.rights | ©2018 American Physical Society | en_GB |
dc.title | Temperature-dependent Raman linewidths in transition-metal dichalcogenides | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2018-08-22T14:16:53Z | |
dc.identifier.issn | 2469-9950 | |
exeter.article-number | ARTN 035430 | en_GB |
dc.description | This is the author accepted manuscript. The final version is available from American Physical Society via the DOI in this record | en_GB |
dc.identifier.journal | Physical Review B | en_GB |
dcterms.dateAccepted | 2018-07-11 | |
rioxxterms.version | AM | |
refterms.dateFCD | 2018-08-22T14:16:53Z | |
refterms.versionFCD | AM | |