Observation of A1g mode at the edges of MoS2 and its applications
UGC-DAE CSR, Kalpakkam Node, (Affiliated to University of Madras), 603104, Kokilamedu, Tamil Nadu, India
2 Materials Science Group, IGCAR, HBNI, 603102, Kalpakkam, Tamil Nadu, India
Accepted: 17 May 2021
Published online: 28 May 2021
Anisotropic behaviour of the A1g vibrational mode of MoS2 at the edges has been reported. Polarized Raman spectroscopy is used to identify edges, and decipher angles between them have been discussed. The aberrant appearance of the A1g mode at the edges has been attributed to breaking of back-scattering geometry. The direction-dependent intensity of the A1g mode is used to characterize the angle between edges, thus finding the chirality of the edges.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021