LaTe2
LaTe2 is a thermodynamically stable, semimetallic lanthanum telluride compound used primarily in advanced materials research.
About LaTe2
LaTe2 is a stable lanthanum telluride compound characterized by its near-zero-gap electronic structure. As a semimetallic material, it exhibits unique charge carrier dynamics that distinguish it from traditional wide-gap semiconductors or metallic conductors.
Its thermodynamic stability on the convex hull makes it a robust candidate for fundamental studies in condensed matter physics. Researchers utilize this compound to explore the interplay between rare-earth magnetism and chalcogenide-based electronic transport.
Key Properties
Cross-validated computational properties for LaTe2, aggregated across 7 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 LaTe2. 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 LaTe2, 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. |
|---|---|---|---|---|---|
| Pma2 (No. 28) | orthorhombic | 0.00 | 0.0000 | -1.495 | — |
| — | — | 0.00 | 0.0000 | -1.402 | — |
| P4/nmm (No. 129) | tetragonal | 0.00 | 0.0000 | -1.495 | — |
| P4bm (No. 100) | tetragonal | 0.00 | 0.0000 | -5.424 | 6.75 |
| P4/nmm (No. 129) | tetragonal | 0.00 | 0.0000 | -1.495 | — |
| P4/nmm (No. 129) | tetragonal | 0.00 | 0.0002 | -1.495 | — |
| P4/nmm (No. 129) | tetragonal | 0.00 | 0.0002 | -1.495 | — |
| Pba2 (No. 32) | orthorhombic | 0.06 | 0.0003 | -28.488 | 6.71 |
| P4bm (No. 100) | tetragonal | 0.00 | 0.0004 | -5.423 | 6.75 |
| P4bm (No. 100) | tetragonal | 0.00 | 0.0004 | -5.423 | 6.75 |
| — | — | 0.00 | 0.0005 | -1.402 | — |
| Pma2 (No. 28) | orthorhombic | 0.00 | 0.0011 | -5.422 | 6.71 |
Applications
Where LaTe2 is used.
Frequently Asked Questions
Common questions about LaTe2, answered from cross-validated data.
What is LaTe2?
LaTe2 is a thermodynamically stable, semimetallic lanthanum telluride compound used primarily in advanced materials research.
What is LaTe2 used for?
What is the band gap of LaTe2?
Is LaTe2 a metal, semiconductor, or insulator?
Is LaTe2 thermodynamically stable?
What is the crystal structure of LaTe2?
How many polymorphs of LaTe2 are known?
What elements does LaTe2 contain?
Where does the data for LaTe2 come from?
How It Compares
As a distinct member of the lanthanum telluride family, LaTe2 serves as a foundational reference point for understanding the electronic evolution within rare-earth chalcogenide systems. It represents a stable, semimetallic baseline against which other, more complex or unstable telluride phases can be evaluated.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- 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)
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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