H8Ba4Cu8O36P8
H8Ba4Cu8O36P8 has a DFT band gap of 0.18 eV across 3 reported structures in 2 space groups; its lowest-energy polymorph is orthorhombic (P212121 (No. 19)). Cross-validated across 3 computational databases.
At a glance
Key Properties
Cross-validated computational properties for H8Ba4Cu8O36P8, 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.
0.18 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.
0.009 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.
Near hull (likely stable)
1 DFT source
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
3
3 databases, 2 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for H8Ba4Cu8O36P8, 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. |
|---|---|---|---|---|---|
| P212121 (No. 19) | orthorhombic | 0.18 | 0.0093 | -6.686 | 4.10 |
| No. 0 | unknown | — | — | — | 1.07 |
| — | — | — | — | — | 3.38 |
Reference
Frequently Asked Questions
Common questions about H8Ba4Cu8O36P8, answered from cross-validated data.
What is the band gap of H8Ba4Cu8O36P8?
H8Ba4Cu8O36P8 has a DFT-computed band gap of 0.18 eV across 3 reported structures.
More questions
Is H8Ba4Cu8O36P8 a metal, semiconductor, or insulator?
With a band gap up to 0.18 eV it is a semiconductor.
Is H8Ba4Cu8O36P8 thermodynamically stable?
H8Ba4Cu8O36P8 has a lowest energy above hull of 0.009 eV/atom (near hull (likely stable)).
What is the crystal structure of H8Ba4Cu8O36P8?
The lowest-energy reported polymorph of H8Ba4Cu8O36P8 is orthorhombic symmetry, space group P212121 (No. 19).
What is the density of H8Ba4Cu8O36P8?
The computed density of the ground-state structure of H8Ba4Cu8O36P8 is 4.10 g/cm³.
How many polymorphs of H8Ba4Cu8O36P8 are known?
3 structures of H8Ba4Cu8O36P8 are reported across 3 databases, spanning 2 distinct space groups.
What elements does H8Ba4Cu8O36P8 contain?
H8Ba4Cu8O36P8 contains Ba, Cu, H, O, and P (5 elements).
Where does the data for H8Ba4Cu8O36P8 come from?
H8Ba4Cu8O36P8 data is cross-referenced from materials_project, cod, omat24.
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Related Compounds
Other Cuprate Superconductors in the database.
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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