3 papers
cond-mat.supr-con2017
A new superconducting open-framework allotrope of silicon at ambient pressure
Ha-Jun Sung, W. H. Han, In-Ho Lee +1
Diamond Si is a semiconductor with an indirect band gap that is the basis of modern semiconductor technology. Although many metastable forms of Si were observed using diamond anvil…
cond-mat.mes-hall2016
Semimetallic carbon allotrope with topological nodal line in mixed - bonding networks
Ha-Jun Sung, Sunghyun Kim, In-Ho Lee +1
Graphene is known as a two-dimensional Dirac semimetal, in which electron states are described by the Dirac equation of relativistic quantum mechanics. Three-dimensional analogues…
cond-mat.mes-hall2015
Understanding topological phase transition in transition metal dichalcogenides
Duk-Hyun Choe, Ha-Jun Sung, Kee Joo Chang
Despite considerable interest in layered transition metal dichalcogenides (TMDs), such as MX2 with M = (Mo, W) and X = (S, Se, Te), the physical origin of their topological nature…