CoTe
cobalt monotelluride · cobalt telluride
CoTe is a metallic, metastable cobalt telluride compound characterized by its extensive structural diversity.
About cobalt monotelluride
CoTe is a metallic cobalt telluride that exists in a metastable state. Its electronic character is defined by a lack of a band gap, marking it as a conductive material of significant interest for fundamental solid-state research.
Due to its high structural complexity, this compound has been extensively documented across multiple databases. It serves as a key subject for understanding phase stability and transition behaviors in transition metal chalcogenides.
Key Properties
Cross-validated computational properties for cobalt monotelluride, aggregated across 5 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CoTe. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for CoTe, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| — | — | 0.00 | 0.0516 | -0.106 | — |
| — | — | 0.00 | 0.0537 | -0.103 | — |
| — | — | 0.00 | 0.0845 | -0.073 | — |
| — | — | 0.00 | 0.0895 | -0.068 | — |
| — | — | 0.00 | 0.0897 | -0.067 | — |
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.0904 | -19.374 | 8.83 |
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.1243 | -0.032 | — |
| — | — | 0.00 | 0.2974 | 0.140 | — |
| — | — | 0.00 | 0.2979 | 0.141 | — |
| — | — | 0.00 | 0.3136 | 0.156 | — |
| — | — | 0.00 | 0.3534 | 0.196 | — |
| — | — | 0.00 | 0.3601 | 0.203 | — |
Applications
Where cobalt monotelluride is used.
Frequently Asked Questions
Common questions about cobalt monotelluride, answered from cross-validated data.
What is CoTe?
CoTe is a metallic, metastable cobalt telluride compound characterized by its extensive structural diversity.
What is CoTe used for?
What is the band gap of CoTe?
Is CoTe a metal, semiconductor, or insulator?
Is CoTe thermodynamically stable?
How many polymorphs of CoTe are known?
What elements does CoTe contain?
Where does the data for CoTe come from?
How It Compares
As a standalone entry in this context, CoTe represents a vital baseline for metallic tellurides, showcasing the inherent structural variability often found in metastable binary systems.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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