RESONANCE RAMAN SCATTERING SPECTROSCOPY OF FOUR-MONOLAYER THICK MoS2статья
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Дата последнего поиска статьи во внешних источниках: 27 ноября 2019 г.
Аннотация:We studied the Raman scattering in bulk and four-monolayer thick MoS2 films under the resonance laser excitation of A, B, and C excitons. We demonstrate the fine structure agility of a phonon mode associated with out-of-plane vibration of sulfur atoms (A1g) when passing from bulk to atomically thin film. The C exciton resonance excitation allows us to register the line corresponding to optical-phonon (E1g) scattering and the set of peaks with a 660 – 740 cm−1 Stokes shift associated with resonance scattering by two optical (Eu) phonons.