High-energy excitonic effects in single-layer graphene
Penulis/Author
Eri Widianto (1); Lucky Zaehir Maulana (2); Prof. Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (3); Angelo Giglia (4); Konstantin Koshmak (5); Stefano Nannarone (6); Andrivo Rusydi (7); Dr. Iman Santoso, S.Si., M.Sc. (8)
Tanggal/Date
6 2024
Kata Kunci/Keyword
Abstrak/Abstract
Using high-energy polarization-dependent reflectivity, we discover concomitantly novel high energy resonant excitons at room temperature in single layer graphene. The resonant excitons occur at ~10.04 eV and ~12.29 eV arising from transitions between parallel σ and π* states along Γ-K, as well as σ and σ* states at M point, respectively. The observation of spectral weight transfer signifies electronic corelation and that the two-dimensional nature and low-energy properties are strongly coupled with high-energy bands. Our result shows the importance of electron-electron and electron-hole interactions in determining electronic and optical properties of graphene and two-dimensional systems.
Rumpun Ilmu
Fisika
Bahasa Asli/Original Language
English
Level
Internasional
Status
Dokumen Karya
No
Judul
Tipe Dokumen
Aksi
1
Widianto_Santoso_PRM8_065201(2024)_High Energy Exciton in Single Layer Graphene.pdf
