CsAu
Cesium auride · Cesium gold
Cesium auride is a stable, semiconducting intermetallic compound formed from cesium and gold that exhibits unusual electronic properties.
About Cesium auride
Cesium auride is a fascinating intermetallic compound that stands out for its distinct electronic behavior. Unlike many typical metallic alloys, this material acts as a semiconductor, a property that arises from the unique charge transfer between the highly electropositive cesium and the electronegative gold atoms.
Because it resides on the thermodynamic convex hull, the compound is highly stable, making it a subject of significant interest for fundamental solid-state research. Its ability to form stable structures while defying conventional metallic expectations makes it a key example of how alkali metals and noble metals can interact to create novel electronic states.
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.
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 a stable, semiconducting intermetallic compound formed from cesium and gold that exhibits unusual electronic properties.
What is CsAu used for?
What is the band gap of CsAu?
Is CsAu a metal, semiconductor, or insulator?
Is CsAu thermodynamically stable?
How many polymorphs of CsAu are known?
What elements does CsAu contain?
Where does the data for CsAu come from?
How It Compares
As a unique intermetallic compound, CsAu serves as a primary example of an ionic-like system within the broader landscape of alkali-gold alloys. It demonstrates that combinations of these elements can result in semiconducting behavior rather than simple metallic conductivity, setting a benchmark for understanding charge transfer in binary noble metal systems.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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