ABSTRACT
The discovery of symmetry-protected states of matter in time-reversal topological insulators (TIs)[1] and topological semimetals[2-4] has attracted tremendous interest in a wide range of areas from condensed matter physics to materials science and high-energy physics. The first discovered TI[1] is protected by time-reversal symmetry with Kramers degeneracy protecting nontrivial conducting states on the boundary. Recently, the classification of topological insulating phases has been extended to many other discrete symmetry classes, especially topological superconductors[5], non-symmorphic TIs[6, 7] and Dirac insulators[8]. Furthermore, we propose a new and complete electronic band theory[9] that is a description of the universal global properties of all possible band structures, making the link between topology and local chemical bonding with the conventional band theory of electrons. In semimetal aspects, some free fermionic excitations[10] are explored in 230 space groups in 3D lattices. All possible 3-, 6- and 8- fold degenerate fermions are numerated completely.
Select References:
[1] HJ Zhang, et al. Nature physics 5, 438-442 (2009); [2] ZJ Wang, et al. PRB 85, 195320 (2012); PRB 88, 125427 (2013); [3] AA Soluyanov, D Gresch, ZJ Wang, et al. Type-II Weyl semimetals. Nature 527, 495-498 (2015); [4] ZJ Wang, D Gresch, et al. Phys. Rev. Lett. 117, 056805 (2016); [5] ZJ Wang, P. Zhang, et al. . PRB 92, 115119, (2015); P. Zhang, et al. arXiv:1706.05163 (2017); [6] ZJWang, A Alexandradinata, et al. Hourglass fermions. Nature 532, 189-194 (2016); [7] J-Z Ma, C-J Yi, BQ Lv, ZJ Wang, et al. Science Advances 3, 1602415 (2017); [8] BJ Wieder, B Bradlyn, ZJ Wang, J Cano, et al. the Topological Dirac Insulator, arXiv:1705.01617 (2017); [9] B Bradlyn, et al. Topological quantum chemistry, arXiv:1703.02050 (2017); [10] B Bradlyn, J Cano, ZJ Wang, et al. Science 353, DOI:10.1126/science.aaf5037 (2016).
BIOGRAPHY
Dr Wang finished his Bachelor degree from Central South University in ChangSha in 2009. Then he got admission to the graduate school of CAS in Beijing. He was studying Density Functional Theory and Dynamic Mean-Field Theory in Prof. Z. Fang and Prof. X. Dai's group at IOP as a graduate student. They proposed several Dirac semimetals, which are verified by experimental groups worldwide. After the graduation from IOP, he went to Princeton University as a postdoctoral research associate, working with a theoretical physicist, Prof. B. Andrei Bernevig. Since then, he has achieved lots of progress in study of topological phases in solids of 230 space groups and predicted some novel topological materials. So far, his publications include Nature, Science, Nature Physics, Nature materials, Science Advances, PRX, PRL, and PRB, etc. The total citation is about 4300 with h-index 22 from Google Scholar. His current interest is focused on topological superconductors, topological quantum materials and their novel properties in experiments.
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