Enhancement of electron phonon coupling by modulation of out-of-plane oxygen functional groups in thermally annealed few layer graphene

0582300 - ÚFCH JH 2025 RIV US eng C - Conference Paper (international conference)
Sarkar, S. - Roy, Rajarshi - Chattopadhyay, K. K.
Enhancement of electron phonon coupling by modulation of out-of-plane oxygen functional groups in thermally annealed few layer graphene.
AIP Conference Proceedings. Vol. 2995. New York: AIP, 2024, č. článku 020209. ISSN 0094-243X.
[DAE Solid State Physics Symposium /66./. Ranchi (IN), 18.12.2022-22.12.2022]
Institutional support: RVO:61388955
Keywords : electrons * graphene * spectroscopy
OECD category: Physical chemistry

Understanding some collective phenomena in two dimensional van der Waal structure has been recently on-trend. Particularly, in doped graphene, physics related to highly correlated electronic structures is extensively studied to explain the quantum behaviors like superconductivity (SC), charge density wave (CDW), etc. In this work, we investigate a latent feature of functionalized graphene, i.e., electron-phonon coupling (EPC), which is essential to achieve these symmetry-breaking states. This study demonstrates the role of oxygen functional groups (OFGs), incorporated in graphene lattice along out-of-plane direction, in increasing electron-phonon interaction. Two significant spectroscopic tools, X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy, are employed to measure this interaction.
Permanent Link: https://hdl.handle.net/11104/0350416