As4Er4Te4
As4Er4Te4 is a thermodynamically stable semiconducting material composed of arsenic, erbium, and tellurium.
About As4Er4Te4
As4Er4Te4 is a complex inorganic compound composed of arsenic, erbium, and tellurium. It is recognized as a thermodynamically stable material that sits on the convex hull, indicating a robust structural configuration under standard conditions.
As a semiconducting material, this compound is of interest for its electronic properties. Its specific composition allows for unique interactions between the rare-earth erbium atoms and the chalcogenide-pnictide framework, making it a subject of interest in solid-state materials research.
Key Properties
Cross-validated computational properties for As4Er4Te4, aggregated across 3 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 As4Er4Te4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 0.36 | 0.0000 | -25.996 | 8.27 |
| No. 0 | unknown | — | — | — | 2.11 |
| — | — | — | — | — | 6.36 |
Frequently Asked Questions
Common questions about As4Er4Te4, answered from cross-validated data.
What is As4Er4Te4?
As4Er4Te4 is a thermodynamically stable semiconducting material composed of arsenic, erbium, and tellurium.
What is the band gap of As4Er4Te4?
Is As4Er4Te4 a metal, semiconductor, or insulator?
Is As4Er4Te4 thermodynamically stable?
What is the crystal structure of As4Er4Te4?
What is the density of As4Er4Te4?
How many polymorphs of As4Er4Te4 are known?
What elements does As4Er4Te4 contain?
Where does the data for As4Er4Te4 come from?
How It Compares
As4Er4Te4 represents a distinct quaternary arrangement within its chemical family. As a thermodynamically stable member of this group, it provides a reliable structural baseline for understanding how the integration of rare-earth elements into arsenic-tellurium networks influences electronic behavior.
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).
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