Figure 1
From: Data Mining for Three-Dimensional Organic Dirac Materials: Focus on Space Group 19
Crystal structure and electronic structure of the orthorhombic organic crystal C6H7ClO3. (a) Orthorhombic unit cell and single molecule of C6H7ClO3. Grey denotes carbon, red oxygen, blue hydrogen and green chlorine. (b) Brillouin zone path for band structure calculation. (c) Energy dispersion in \({\overrightarrow{b}}_{2}\)-\({\overrightarrow{b}}_{3}\)-plane around the R point. (d) Band structure and density of states. Crossings highlighted in green circles are 8-fold degenerate Dirac-points protected by crystalline symmetry and crossings in red circles are 4-fold degenerate Dirac points protected by band topology. (e) Energy dispersion along \(\overline{{\rm{\Gamma }}X}\), \(\overline{{\rm{\Gamma }}Y}\), \(\overline{{\rm{\Gamma }}Z}\) and irreducible representations.
