3 papers
cond-mat.mtrl-sci2021
On-demand quantum spin Hall insulators controlled by two-dimensional ferroelectricity
Jiawei Huang, Xu Duan, Sunam Jeon +4
The coexistence of ferroelectric and topological orders in two-dimensional (2D) atomic crystals allows non-volatile and switchable quantum spin Hall states. Here we offer a general…
cond-mat.mes-hall2020
Higher-Order Topological Instanton Tunneling Oscillation
Moon Jip Park, Sunam Jeon, SungBin Lee +2
We propose a new type of instanton interference effect in two-dimensional higher-order topological insulators. The intercorner tunneling consists of the instanton and the anti-inst…
cond-mat.mtrl-sci2018
Ferromagnetic nodal-line metal in monolayer {\em h}-InC
Sunam Jeon, Yun-Tak Oh, Youngkuk Kim
Based on first-principles calculations, we predict a new two-dimensional ferromagnetic material that exhibits exotic Fermi surface topology. We show that monolayer hexagonal indium…