224 citations · 286 across the 4 of their papers we have counts for
4 papers
Many-body interactions in quasi-freestanding graphene
David A. Siegel, Cheol-Hwan Park, Choongyu Hwang +4
The Landau-Fermi liquid picture for quasiparticles assumes that charge carriers are dressed by many-body interactions, forming one of the fundamental theories of solids. Whether th…
Quasi-Freestanding Multilayer Graphene Films on the Carbon Face of SiC
David A. Siegel, Choongyu Hwang, Alexei V. Fedorov +1
The electronic band structure of as-grown and doped graphene grown on the carbon face of SiC is studied by high-resolution angle-resolved photoemission spectroscopy, where we obser…
The stability of graphene band structures against an external periodic perturbation; Na on Graphene
Choongyu Hwang, Sunyoung Shin, Seon-Myeong Choi +7
We report that the band of graphene sensitively changes as a function of an external potential induced by Na especially when the potential becomes periodic at low temperature.…
Core Level and Valence Band Study of LaOFFeAs
D. R. Garcia, C. Jozwiak, C. G. Hwang +8
Using angle-integrated photoemission spectroscopy we have probed the novel LaOFFeAs superconductor over a wide range of photon energies and temperatures. We have pr…