Coexistence of open and closed type nodal line topological semimetals in two dimensional B₂C

Abstract

The detection of open and closed type nodal lines in the bilayer topological semimetal B2C on the substrate of Cu(110).

The Tetragonal Monoxide of Platinum: A New Platform for Investigating Nodal-Line and Nodal-Point Semimetallic Behavior

“…Topological nodal point semimetals (Hosur et al, 2012 ; Zyuzin and Burkov, 2012 ; Hosur and Qi, 2013 ; Vazifeh and Franz, 2013 ; Liu et al, 2014 ; Lundgren et al, 2014 ; Kobayashi and Sato, 2015 ; Miransky and Shovkovy, 2015 ; Xu et al, 2015a ; Young and Kane, 2015 ) enjoy 0-D nodal points in momentum space. Topological nodal line semimetals (Cai et al, 2018 ; Chen et al, 2018 ; Gao et al, 2018 ; Zhou et al, 2018 ; He et al, 2019 ; Jin et al, 2019a ; Pham et al, 2019 ; Yi et al, 2019 ; Zou et al, 2019 ; Zhao et al, 2020 ) host 1-D topological nodal lines in momentum space via band crossing along a line in momentum space. Topological nodal surface semimetals (Wu et al, 2018 ; Zhang et al, 2018 ; Fu et al, 2019a ; Qie et al, 2019 ; Yang et al, 2020 ) host 2-D nodal surface states that are composed of continuous band crossing points.…”

Pure Zirconium: Type II Nodal Line and Nodal Surface States

“…Topological semimetals and topological metals (Fang et al, 2016 ; Yan and Felser, 2017 ; Schoop et al, 2018 ; Zhou et al, 2018 ; Gao et al, 2019 ; Hu et al, 2019 ; Klemenz et al, 2019 ; Pham et al, 2019 ; Xie et al, 2019 ; Yi et al, 2019 ) have been widely investigated because they can be regarded as good candidates for use in the areas of spintronics and quantum computers. Weyl and Dirac materials (Ouyang et al, 2016 ; Zhong et al, 2016 ; Zhou et al, 2016 ; Liu et al, 2017 ; Fu et al, 2018 ; Meng et al, 2019 , 2020a ; Zhang et al, 2020 ), which host 2-fold and fourfold degenerate band-crossing points, have been explored in real materials and their exotic properties have been confirmed in experiments.…”

Hypothetical P63/mmc-Type CsCrCl3 Ferromagnet: Half-Metallic Property and Nodal Surface State

“…Wu et al (2018) proposed a new class of topological bulk materials, 3D nodal surface semimetals. They are topological materials with 2D nodal surface states, which are different from topological semimetals with a 0D nodal point (Soluyanov et al, 2015;Young and Kane, 2015;Kumar et al, 2017;Jin K. et al, 2019) and 1D nodal line (Chen et al, 2018;Liu et al, 2018;Zhou et al, 2018;He et al, 2019;Jin L. et al, 2019;Pham et al, 2019;Yan et al, 2019;Yi et al, 2019;Zou et al, 2019;Zhao et al, 2020). To date, only a few nodal surface semimetals (Wu et al, 2018) have been the subject of theoretical investigations.…”