Ca4Cu4O28P8
Ca4Cu4O28P8 has a DFT band gap of 0.03–0.69 eV across 7 reported structures in 2 space groups. Cross-validated across 2 computational databases.
At a glance
Key Properties
Cross-validated computational properties for Ca4Cu4O28P8, aggregated across 2 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.
0.03–0.69 eV
Range across DFT structures
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.
0.000 eV/atom
Best (lowest) across sources
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.
On hull (stable)
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
7
2 databases, 2 space groups
Reference
Frequently Asked Questions
Common questions about Ca4Cu4O28P8, answered from cross-validated data.
What is the band gap of Ca4Cu4O28P8?
Ca4Cu4O28P8 has a DFT-computed band gap of 0.03–0.69 eV across 7 reported structures.
More questions
Is Ca4Cu4O28P8 a metal, semiconductor, or insulator?
With a band gap up to 0.69 eV it is a semiconductor.
Is Ca4Cu4O28P8 thermodynamically stable?
Yes — Ca4Cu4O28P8 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Ca4Cu4O28P8 are known?
7 structures of Ca4Cu4O28P8 are reported across 2 databases, spanning 2 distinct space groups.
What elements does Ca4Cu4O28P8 contain?
Ca4Cu4O28P8 contains Ca, Cu, O, and P (4 elements).
Where does the data for Ca4Cu4O28P8 come from?
Ca4Cu4O28P8 data is cross-referenced from latticegraph.
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Related Compounds
Other Cuprate Superconductors in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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