2 papers
cond-mat.mes-hall2019
Many-body approach to non-Hermitian physics in fermionic systems
Eunwoo Lee, Hyunjik Lee, Bohm-Jung Yang
In previous studies, the topological invariants of 1D non-Hermitian systems have been defined in open boundary condition (OBC) to satisfy the bulk-boundary correspondence. The extr…
cond-mat.mtrl-sci2019
Two-dimensional higher-order topology in monolayer graphdiyne
Eunwoo Lee, Rokyeon Kim, Junyeong Ahn +1
Based on first-principles calculations and tight-binding model analysis, we propose monolayer graphdiyne as a candidate material for a two-dimensional higher-order topological insu…