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Nature News (Homepage, July 2017) : ..Topology Reshaping Physics

Ideas borrowed from graphene and topological insulators allow one to generalize to talk about a 3D Dirac Semimetal and there can be many different types of 2D and 3D Dirac Semimetals with their experimental realizations in non-Bi or Bi-based spin-orbit materials :
For recent developments in topological materials see talks at
KITP program on topological materials..
and Inst. for Advanced Study (IAS, Princeton) School on Topological Matter Reading List

FOCUS issue on "Topological Semimetals" by Nature Materials (Collection of Articles)

Topological Silicides
(Platform for topological quant. phenomena )

Topological phases in RhSi family of silicides

Guoqing Chang, Su-Yang Xu, Benjamin J Wieder, Daniel S Sanchez, Shin-Ming Huang, Ilya Belopolski, Tay-Rong Chang, Songtian Zhang, Arun Bansil, Hsin Lin, M Zahid Hasan

Phys. Rev. Lett. (in press) 2017

Magnetic Topological Metals

Topological electronic structure in half-Heusler topological insulators.
Published in W. Al-Sawai, Hsin Lin, R. S. Markiewicz, L. A. Wray, Y. Xia, Su-Yang Xu, M. Z. Hasan, A. Bansil, et al.,

Phys. Rev. B 82, 125208 (2010)