Vibrational spectrum renormalization by enforced coupling across the van der Waals gap between MoS2 and WS2 monolayers

• Main Authors: Fan, Wen, Zhu, Xi, Ke, Feng, Chen, Yabin, Dong, Kaichen, Ji, Jie, Chen, Bin, Tongay, Sefaattin, Ager, Joel W., Liu, Kai, Su, Haibin, Wu, Junqiao
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2016
• Online Access: https://hdl.handle.net/10356/81908; http://hdl.handle.net/10220/39695
• Institution: Nanyang Technological University

At the few or monolayer limit, layered materials define an interesting two-dimensional system with unique electronic and phonon properties. The electron band structure of monolayers can be drastically different from multilayers despite the weak van der Waals interaction between neighboring layers. I...