G
Gey-Hong Gweon
Researcher at University of California, Berkeley
Publications - 68
Citations - 6482
Gey-Hong Gweon is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Angle-resolved photoemission spectroscopy & Photoemission spectroscopy. The author has an hindex of 27, co-authored 68 publications receiving 6223 citations. Previous affiliations of Gey-Hong Gweon include Lawrence Berkeley National Laboratory & University of Michigan.
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Journal ArticleDOI
Substrate-induced bandgap opening in epitaxial graphene
Shuyun Zhou,Gey-Hong Gweon,Gey-Hong Gweon,Alexei V. Fedorov,Phillip N. First,W. A. de Heer,D.-H. Lee,Francisco Guinea,A. H. Castro Neto,Alessandra Lanzara,Alessandra Lanzara +10 more
TL;DR: It is shown that when graphene is epitaxially grown on SiC substrate, a gap of approximately 0.26 eV is produced and it is proposed that the origin of this gap is the breaking of sublattice symmetry owing to the graphene-substrate interaction.
Journal ArticleDOI
Substrate-induced band gap opening in epitaxial graphene
Shuyun Zhou,Gey-Hong Gweon,Alexei V. Fedorov,P. N. First,W. A. de Heer,D.-H. Lee,Francisco Guinea,A. H. Castro Neto,Alessandra Lanzara +8 more
TL;DR: In this article, the authors show that when epitaxially grown on the SiC substrate, a gap of ~ 0.26 is produced and this gap decreases as the sample thickness increases and eventually approaches zero when the number of layers exceeds four.
Journal ArticleDOI
First direct observation of Dirac fermions in graphite
Shuyun Zhou,Shuyun Zhou,Gey-Hong Gweon,Jeff Graf,Alexei V. Fedorov,Catalin D. Spataru,Catalin D. Spataru,Renee D. Diehl,Yakov Kopelevich,D.-H. Lee,D.-H. Lee,Steven G. Louie,Steven G. Louie,Alessandra Lanzara,Alessandra Lanzara +14 more
TL;DR: In this paper, the first direct observation of relativistic Dirac fermions with linear dispersion near the Brillouin zone (BZ) corner H was reported.
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Synthesis and characterization of atomically thin graphite films on a silicon carbide substrate
Elizabeth Rollings,Gey-Hong Gweon,Shuyun Zhou,Bongjin Simon Mun,J.L. McChesney,B.S. Hussain,Alexei V. Fedorov,Phillip N. First,W. A. de Heer,Alessandra Lanzara,Alessandra Lanzara +10 more
TL;DR: In this paper, the synthesis and detailed characterization of graphite thin films produced by thermal decomposition of the face of a 6H-SiC wafer, demonstrating the successful growth of single crystalline films down to approximately one graphene layer, was carried out in ultrahigh vacuum (UHV) conditions.
Journal ArticleDOI
An unusual isotope effect in a high-transition-temperature superconductor.
Gey-Hong Gweon,Takao Sasagawa,Shuyun Zhou,Jeff Graf,Hidenori Takagi,D.-H. Lee,D.-H. Lee,Alessandra Lanzara,Alessandra Lanzara +8 more
TL;DR: A detailed comparison of the electron dynamics of Bi2212 samples containing different oxygen isotopes is provided, using angle-resolved photoemission spectroscopy, to suggest that these results can be explained in a dynamic spin-Peierls picture, where the singlet pairing of electrons and the electron–lattice coupling mutually enhance each other.