Ge1La2Li1
Ge1La2Li1 is a semimetallic ternary compound composed of germanium, lanthanum, and lithium that exists as a metastable phase.
About Ge1La2Li1
Ge1La2Li1 is a ternary intermetallic compound composed of germanium, lanthanum, and lithium. It exhibits a near-zero-gap electronic character, placing it in the category of semimetallic materials that often demonstrate unique transport properties due to their specific band structure configurations. The material is categorized as being above the thermodynamic hull, suggesting it is a metastable phase. Its structural complexity is highlighted by a significant number of reported configurations across material databases, reflecting the diverse ways these elements can arrange themselves at the atomic scale.
Key Properties
Cross-validated computational properties for Ge1La2Li1, 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.
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 Ge1La2Li1, 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. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 0.09 | 2.1965 | -2.368 | 0.44 |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Ge1La2Li1, answered from cross-validated data.
What is Ge1La2Li1?
Ge1La2Li1 is a semimetallic ternary compound composed of germanium, lanthanum, and lithium that exists as a metastable phase.
What is the band gap of Ge1La2Li1?
Is Ge1La2Li1 a metal, semiconductor, or insulator?
Is Ge1La2Li1 thermodynamically stable?
What is the crystal structure of Ge1La2Li1?
What is the density of Ge1La2Li1?
How many polymorphs of Ge1La2Li1 are known?
What elements does Ge1La2Li1 contain?
Where does the data for Ge1La2Li1 come from?
How It Compares
As a unique ternary phase, Ge1La2Li1 represents a specialized case within the broader family of lithium-lanthanum-germanium systems. While it lacks direct structural siblings in this specific dataset, its metastable nature and semimetallic behavior distinguish it from more conventional, highly stable intermetallic compounds, positioning it as an interesting subject for studies on phase stability and structural polymorphism.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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