First-principles theory of low-dimensional systems, their assembly, and the influence of their environment
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Authors
Liang, Liangbo
Issue Date
2014-05
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Physics
Alternative Title
Abstract
In addition to homogeneous systems, MoS2/WS2 heterostructures can show combined functionality of the individual layers, can lead to emergent properties and thus are very desirable. Hence, we also study ab initio Raman spectra of MoS2/WS2 heterostructures up to four layers in every possible combinations and stacking orders. Each heterostructure configuration is found to possess a unique Raman spectrum in both frequency and intensity that can be explained by changes in dielectric screening and interlayer coupling. The results establish a set of guidelines that can be used for the experimental identification of heterostructure configurations.
Description
May 2014
School of Science
School of Science
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY