Interplay between the Kagome flat band and the Dirac cone in porous graphitic networks
Sign Up to like & getrecommendations! Published in 2017 at "Carbon"
DOI: 10.1016/j.carbon.2017.08.040
Abstract: Abstract We have investigated the geometric and electronic structures of porous graphene consisting of triangular hydrocarbon molecules polymerized by oligoacene interconnects by density functional theory. The networks possess both Dirac cones and Kagome flat bands… read more here.
Keywords: dirac cone; kagome flat; interplay kagome; band ... See more keywords
Double Dirac cone in two-dimensional phononic crystals beyond circular cells
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4979852
Abstract: A double Dirac cone plays a significant role in the design of zero-refractive-index metamaterials without phase variation and topological insulators with pseudospin states. We present a study on the formation of a double Dirac cone… read more here.
Keywords: double dirac; dirac cone; phononic crystals; two dimensional ... See more keywords
Unusual change in the Dirac-cone energy band upon a two-step magnetic transition in CeBi
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.125122
Abstract: We have performed angle-resolved photoemission spectroscopy (ARPES) on CeBi which undergoes a two-step antiferromagnetic (AF) transition with temperature. Soft-x-ray ARPES has revealed the inverted band structure at the X point of bulk Brillouin zone for… read more here.
Keywords: two step; band; transition; dirac cone ... See more keywords
Tilt-induced many-body corrections to optical conductivity of tilted Dirac cone materials
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.085152
Abstract: Katsnelson has shown that, within the Fermi-liquid approach, the optical conductivity of Dirac electrons in graphene is not affected by many-body interactions [M. I. Katsnelson, Eur. Phys. Lett. 84, 37001 (2008)]. We show that, when… read more here.
Keywords: many body; dirac cone; conductivity; optical conductivity ... See more keywords
Dynamical gap generation in a two-dimensional Dirac semimetal with a deformed Dirac cone
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.155114
Abstract: According to the extensive theoretical and experimental investigations, it is widely accepted that the long-range Coulomb interaction is too weak to generate a dynamical excitonic gap in graphene with a perfect Dirac cone. We study… read more here.
Keywords: dynamical gap; cone; dirac cone; gap generation ... See more keywords
Finding correlations in a Dirac-cone material
Sign Up to like & getrecommendations! Published in 2017 at "Science"
DOI: 10.1126/science.358.6369.1397-j
Abstract: 2D Materials Researchers have long been on the lookout for signatures of electron-electron interactions in materials whose electrons have linear energy dispersions represented by Dirac cones, such as graphene. However, these effects have remained frustratingly… read more here.
Keywords: cone material; finding correlations; dirac cone; correlations dirac ... See more keywords