100 citations · 216 across the 3 of their papers we have counts for
4 papers
Breakdown of the interlayer coherence in twisted bilayer graphene
Youngwook Kim, Hoyeol Yun, Seung-Geol Nam +8
Coherent motion of the electrons in the Bloch states is one of the fundamental concepts of the charge conduction in solid state physics. In layered materials, however, such a condi…
Ballistic transport of graphene pnp junctions with embedded local gates
Seung-Geol Nam, Dong-Keun Ki, Jong Wan Park +3
We fabricated graphene pnp devices, by embedding pre-defined local gates in an oxidized surface layer of a silicon substrate. With neither dielectric-material deposition nor electr…
Thermoelectric Transport of Massive Dirac Fermions in Bilayer Graphene
Seung-Geol Nam, Dong-Keun Ki, Hu-Jong Lee
Thermoelectric power (TEP) is measured in bilayer graphene for various temperatures and charge-carrier densities. At low temperatures, measured TEP well follows the semiclassical M…
Dependence of quantum-Hall conductance on the edge-state equilibration position in a bipolar graphene sheet
Dong-Keun Ki, Seung-Geol Nam, Hu-Jong Lee +1
By using four-terminal configurations, we investigated the dependence of longitudinal and diagonal resistances of a graphene p-n interface on the quantum-Hall edge-state equilibrat…