NbS2 (2H Niobium Disulfide)
NbS2 (2H phase) is superconductor with a Tc ~6K and a charge density waves (CDW) system. Note that NbS2 also exists in the 3R-NbS2 phase (for the 3R phase NbS2 click here) The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. NbS2 belongs to the group-V transition metal dichalcogenides (TMDC).
To buy NbS2 crystals please click here.
The 2H NbS2 crystals produced at HQ Graphene have a typical lateral size of ~0.2 cm, trigonal/hexagonal shaped and have a metallic appearance.
More information about the NbS2 crystals we sell can be found below.
| Crystal size | ~2 mm |
| Electrical properties | Superconductor (Tc~6K), charge density waves (CDW) system. |
| Crystal structure | hexagonal |
| Unit cell parameters | a = b = 0.332 nm, c = 1.197 nm, α = β = 90, γ = 120° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX |
| More information? | Please contact us by email or phone |
The single crystal 2H NbS2 is characterized using:
XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)EDX: Energy-dispersive X-ray spectroscopy for stoichiometric analysis
Raman: 785 nm Raman system
Raman, XRD and EDX on 2H NbS2:
Click on an image to zoom
HQ Graphene Wiki on:
2H NbS2 (Niobium disulfide)
1. El Youbi, Z., et al. "Fermiology and electron-phonon coupling in the 2 H and 3 R polytypes of Nb S 2." Physical Review B 103.15 (2021): 155105.
2. Yan, R., et al. "Thickness dependence of superconductivity in ultrathin NbS2." Applied Physics Express 12.2 (2019): 023008.