WTe2 (Tungsten Ditelluride)
WTe2 is a semi-metal, type II Weyl semimetal (WSM). The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Tungsten Ditelluride belongs to the group-VI transition metal dichalcogenides (TMDC).
To buy WTe2 crystals please click here.
The WTe2 crystals produced at HQ Graphene have a typical lateral size of ~0.6-0.8 cm, needle/rechtangular shaped and have a metallic appearance.
We produce n-type WTe2, having a typical charge carrier density of ~1020cm-3 at room temperature.
A selection of peer review publications on the WTe2 we sell can be found below.
| Crystal size | ~10 mm |
| Electrical properties | Semimetal, type II Weyl semimetal (WSM) |
| Crystal structure | Orthorhombic P |
| Unit cell parameters | a = 0.348 nm, b = 0.625 nm, c = 1.405 nm, α = β = γ = 90° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX, Hall measurement |
| More information? | Please contact us by email or phone |
The single crystal WTe2 is characterized using:
XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)EDX: Stoichiometric analysis
Raman: 785nm Raman system
Hall measurement: Extraction of charge carrier density and doping in the Van der Pauw geometry.
Raman, XRD and EDX on WTe2:
Click on an image to zoom
HQ Graphene Wiki on:
WTe2 (Tungsten Ditelluride)
1. Yaojia Wang et al., "Gate-tunable negative longitudinal magnetoresistance in the predicted type-II Weyl semimetal WTe2", Nat. Comm. 7:13142 (2016), link to article ( also available at arxiv.org/abs/1608.05003) :
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5062597/
2. D. MacNeill et al., "Control of spin-orbit torques through crystal symmetry in WTe2/ferromagnet bilayers", Nature Physics (2016) doi:10.1038/nphys3933, link to article (also available at arxiv.org/ftp/arxiv/papers/1605/1605.02712.pdf):
http://www.nature.com/nphys/journal/vaop/ncurrent/full/nphys3933.html
3. L.R. Thoutam et al., "Temperature-Dependent Three-Dimensional Anisotropy of the Magnetoresistance in WTe2 ", PRL 115, 046602 (2015), link to article:
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.115.046602