CsAu
Cesium auride · Cesium gold
Cesium auride is an intermetallic compound that exhibits unusual electronic properties due to the high electronegativity of gold. It acts as an ionic solid where the gold atoms behave as anions, making it a subject of significant interest in fundamental solid-state chemistry and materials research.
Key Properties
Cross-validated computational properties for Cesium auride, 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 CsAu, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 1.02 | 0.0000 | -38.207 | 6.97 |
| P1 (No. 1) | Triclinic | — | — | — | 4.60 |
| P1 (No. 1) | Triclinic | — | — | — | 2.03 |
| P1 (No. 1) | Triclinic | — | — | — | 1.55 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.22 |
| P1 (No. 1) | Triclinic | — | — | — | 1.95 |
| P1 (No. 1) | Triclinic | — | — | — | 1.98 |
| P1 (No. 1) | Triclinic | — | — | — | 2.11 |
| P1 (No. 1) | Triclinic | — | — | — | 8.08 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.12 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.85 |
| P-1 (No. 2) | Triclinic | — | — | — | 2.21 |
Applications
Where Cesium auride is used.
Frequently Asked Questions
Common questions about Cesium auride, answered from cross-validated data.
What is CsAu?
Cesium auride is an intermetallic compound that exhibits unusual electronic properties due to the high electronegativity of gold. It acts as an ionic solid where the gold atoms behave as anions, making it a subject of significant interest in fundamental solid-state chemistry and materials research.
What is CsAu used for?
What is the band gap of CsAu?
Is CsAu a metal, semiconductor, or insulator?
Is CsAu thermodynamically stable?
What is the crystal structure of CsAu?
What is the density of CsAu?
How many polymorphs of CsAu are known?
What elements does CsAu contain?
Where does the data for CsAu come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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