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Reflectance and magneto-reflectance experiments together with theoretical modelling based on the k · p approach have been employed to study the evolution of direct bandgap excitons in MoS2 layers with a thickness ranging from mono- to trilayer. The extra excitonic resonances observed in MoS2 multilayers emerge as a result of the hybridization of Bloch states of each sub-layer due to the interlayer coupling. The properties of such excitons in bi- and trilayers are classified by the symmetry of corresponding crystals. The inter- and intralayer character of the reported excitonic resonances is fingerprinted with the magneto-optical measurements: the excitonic g-factors of opposite sign and of different amplitude are revealed for these two types of resonances. The parameters describing the strength of the spin-orbit interaction are estimated for bi- and trilayer MoS2.

権利情報:

• cc-by-3.0
  

キーワード: MoS2, exciton states, magneto-reflectance

刊行年月日: 2019-02-28

出版者: IOP Publishing

掲載誌:

• 2D Materials (ISSN: 20531583) vol. 6 issue. 2 025026

研究助成金:

• EC Graphene Flagship project 785219
• National Science Centre, Poland DEC-2013/10/M/ST3/00791
• National Science Centre, Poland UMO-2017/24/C/ST3/00119
• ATOMOPTO project

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1088/2053-1583/ab0776

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更新時刻: 2025-02-23 22:49:08 +0900

MDRでの公開時刻: 2025-02-23 22:49:08 +0900