%0 Generic %1 Halász2011 %A Halász, Gábor B. %A Balents, Leon %D 2011 %K weyl %T Time reversal invariant realization of the Weyl semimetal phase %U http://arxiv.org/abs/1109.6137 %X We propose a realization of the Weyl semimetal phase that is invariant under time reversal and occurs due to broken inversion symmetry. We consider both a simple superlattice model and a more realistic tight-binding model describing an experimentally reasonable HgTe/CdTe multilayer structure. The two models have the same underlying symmetry, therefore their low-energy features are equivalent. We find a Weyl semimetal phase between the normal insulator and the topological insulator phases that exists for a finite range of the system parameters and exhibits a finite number of Weyl points with robust band touching at the Fermi level. This phase is experimentally characterized by a strong conductivity anisotropy and topological surface states. The principal conductivities change in a complementary fashion as the system parameters are varied, and the surface states only exist in a region of momentum space that is determined by the positions of the Weyl points.

@misc{Halász2011, abstract = { We propose a realization of the Weyl semimetal phase that is invariant under time reversal and occurs due to broken inversion symmetry. We consider both a simple superlattice model and a more realistic tight-binding model describing an experimentally reasonable HgTe/CdTe multilayer structure. The two models have the same underlying symmetry, therefore their low-energy features are equivalent. We find a Weyl semimetal phase between the normal insulator and the topological insulator phases that exists for a finite range of the system parameters and exhibits a finite number of Weyl points with robust band touching at the Fermi level. This phase is experimentally characterized by a strong conductivity anisotropy and topological surface states. The principal conductivities change in a complementary fashion as the system parameters are varied, and the surface states only exist in a region of momentum space that is determined by the positions of the Weyl points. }, added-at = {2011-09-30T00:37:11.000+0200}, author = {Halász, Gábor B. and Balents, Leon}, biburl = {https://www.bibsonomy.org/bibtex/2507807dc6b97aba9cea82b34967cc7de/vakaryuk}, description = {Time reversal invariant realization of the Weyl semimetal phase}, interhash = {c6d06d8c10d775521b31b50435fb9aee}, intrahash = {507807dc6b97aba9cea82b34967cc7de}, keywords = {weyl}, note = {cite arxiv:1109.6137 Comment: 9 pages, 5 figures}, timestamp = {2011-09-30T00:37:11.000+0200}, title = {Time reversal invariant realization of the Weyl semimetal phase}, url = {http://arxiv.org/abs/1109.6137}, year = 2011 }