Cu4La4S4Te4
Cu4La4S4Te4 is a thermodynamically stable semiconducting quaternary compound composed of copper, lanthanum, sulfur, and tellurium.
About Cu4La4S4Te4
Cu4La4S4Te4 is a complex quaternary chalcogenide that exists in a thermodynamically stable state on the convex hull. As a semiconductor, it represents a specialized class of materials where the interplay between copper, lanthanum, sulfur, and tellurium dictates its electronic behavior.
This compound is of significant interest to materials researchers due to its structural diversity, with multiple reported structures across various databases. Its stability and semiconducting nature make it a compelling candidate for fundamental studies in solid-state chemistry and advanced electronic material design.
Key Properties
Cross-validated computational properties for Cu4La4S4Te4, aggregated across 4 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.
Reported Structures
Lowest-energy structures reported for Cu4La4S4Te4, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.58 | 0.0000 | -5.641 | 6.35 |
| No. 0 | unknown | — | — | — | 1.60 |
| — | — | — | — | — | 4.44 |
| P21/c (No. 14) | — | — | — | — | — |
Applications
Where Cu4La4S4Te4 is used.
Frequently Asked Questions
Common questions about Cu4La4S4Te4, answered from cross-validated data.
What is Cu4La4S4Te4?
Cu4La4S4Te4 is a thermodynamically stable semiconducting quaternary compound composed of copper, lanthanum, sulfur, and tellurium.
What is Cu4La4S4Te4 used for?
What is the band gap of Cu4La4S4Te4?
Is Cu4La4S4Te4 a metal, semiconductor, or insulator?
Is Cu4La4S4Te4 thermodynamically stable?
What is the crystal structure of Cu4La4S4Te4?
What is the density of Cu4La4S4Te4?
How many polymorphs of Cu4La4S4Te4 are known?
What elements does Cu4La4S4Te4 contain?
Where does the data for Cu4La4S4Te4 come from?
How It Compares
As a unique quaternary chalcogenide, Cu4La4S4Te4 occupies a distinct position in materials research, serving as a foundational example of how combining rare-earth elements with transition metals and mixed chalcogen anions can yield stable, semiconducting crystalline phases.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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