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. 2016 Feb 15;7:10639. doi: 10.1038/ncomms10639

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(a) A top view of WTe₂ lattice. (b) A side view of WTe₂ lattice. The silver and yellow balls represent W and Te atoms, respectively. Rectanglar box denotes crystal unit cell. WTe₂ crystalizes in an orthorhombic Bravais lattice, space group Pmn2₁ (No. 31). The lattice constants are a=6.282 Å, b=3.496 Å, c=14.07 Å according to a previous X-ray diffraction measurement³⁶. (c) The bulk and (001) surface BZ of WTe₂. (d) Bulk band structure of WTe₂. (e) Bulk band structure of MoTe₂ by assuming that it has the same crystal structure as WTe2. Note that, in fact, according to available literature MoTe₂ has two possible structures³⁶,³⁷, both of which are different from the crystal structure of WTe₂. (f) Bulk band structure of Mo_0.2W_0.8Te₂.