386 citations · 2.2k across the 31 of their papers we have counts for
10 papers · 1 filter
Manifestation of axion electrodynamics through magnetic ordering on edges of topological insulator
Yea-Lee Lee, Hee Chul Park, Jisoon Ihm +1
Based on a first-principles approach, we show that in a single crystal of a prototypical topological insulator such as BiSe the difference in the work function between adja…
Decay behavior of localized states at reconstructed armchair graphene edges
Changwon Park, Jisoon Ihm, Gunn Kim
Density functional theory calculations are used to investigate the electronic structures of localized states at reconstructed armchair graphene edges. We consider graphene nanoribb…
Pseudospin rotation and valley mixing in electron scattering at graphene edges
Changwon Park, Heejun Yang, Andrew J. Mayne +5
In graphene, the pseudospin and the valley flavor arise as new types of quantum degrees of freedom due to the honeycomb lattice comprising two sublattices (A and B) and two inequiv…
Reversible Metal-Semiconductor Transition of ssDNA-Decorated Single-Walled Carbon Nanotubes
Misun Cha, Seungwon Jung, Moon-Hyun Cha +3
A field effect transistor (FET) measurement of a SWNT shows a transition from a metallic one to a p-type semiconductor after helical wrapping of DNA. Water is found to be critical…
Dissociation of ssDNA - Single-Walled Carbon Nanotube Hybrids by Watson-Crick Base Pairing
Seungwon Jung, Misun Cha, Jiyong Park +5
The unwrapping event of ssDNA from the SWNT during the Watson-Crick base paring is investigated through electrical and optical methods, and binding energy calculations. While the s…
Spontaneous edge-defect formation and defect-induced conductance suppression in graphene nanoribbons
Jia Li, Zuanyi Li, Gang Zhou +5
We present a first-principles study of the migration and recombination of edge defects (carbon adatom and/or vacancy) and their influence on electrical conductance in zigzag graphe…