Search results

Sort By:

Limit search:

The Effect of Substrate on Vibrational Properties of Single-Layer MoS₂

100%

Gołasa K., Molas M., Nogajewski K., Grzeszczyk M., Zinkiewicz M., Potemski M., Babiński A.

Acta Physica Polonica A

2016

vol. 130

issue 5

1172-1175

We report on the Raman scattering from single-layer molybdenum disulfide (MoS₂) deposited on various substrates: Si/SiO₂, hexagonal boron nitride (h-BN), sapphire, as well as suspended. Room temperature Raman scattering spectra are investigated under both resonant (632.8 nm) and non-resonant (514.5 nm) excitations. A rather weak influence of the substrate on the Raman scattering signal is observed. The most pronounced, although still small, is the effect of h-BN, which manifests itself in the change of energy positions of the E' and A'₁ Raman modes of single-layer MoS₂. We interpret this modification as originating from van der Waals interaction between the MoS₂ and h-BN layers.

Raman Spectroscopy of Shear Modes in a Few-Layer MoS₂

100%

Gołasa K., Grzeszczyk M., Zinkiewicz M., Nogajewski K., Potemski M., Wysmołek A., Babiński A.

Acta Physica Polonica A

2016

vol. 129

issue 1a

A-132-A-134

We study low frequency vibrational modes in atomically thin molybdenum disulfide (MoS₂) by means of the Raman scattering spectroscopy. A shear mode related to rigid interlayer vibrations is identified. Its energy evolution with the increasing number of layers is well described using a linear chain model with only nearest neighbor interactions. The resulting force constant (Kₓ = 2.7 × 10¹⁹ N/m³) corresponds well to the previously published data.

Refine search results

2 Acta Physica Polonica A

2 2016

2 Babiński A.

2 Gołasa K.

2 Grzeszczyk M.

2 Nogajewski K.

2 Potemski M.

2 Zinkiewicz M.

1 Molas M.

1 Wysmołek A.

Search results

The Effect of Substrate on Vibrational Properties of Single-Layer MoS₂

Raman Spectroscopy of Shear Modes in a Few-Layer MoS₂