Structure info
Layer group p4/nmm
Layer group number 64
Structure origin Lyngby22_LDP
Stability
Energy above convex hull [eV/atom] 0.357
Heat of formation [eV/atom] -0.360
Dynamically stable Unknown
Basic properties
XYZ CIF JSON
Axis x [Å] y [Å] z [Å] Periodic
1 3.799 0.000 0.000 Yes
2 0.000 3.800 0.000 Yes
3 -0.000 -0.000 32.746 No
Lengths [Å] 3.799 3.800 32.746
Angles [°] 90.000 90.000 90.000

Symmetries
2D Bravais type Square (tp)
Layer group number 64
Layer group p4/nmm
Space group number (bulk in AA-stacking) 129
Space group (bulk in AA-stacking) P4/nmm
Point group 4/mmm
Inversion symmetry Yes
Structure data
Formula Se2Al2
Stoichiometry AB
Number of atoms 4
Unit cell area [Å2] 14.436
Thickness [Å] 2.954

Al2Se2 (2AlSe-4)
Heat of formation [eV/atom] -0.36
Energy above convex hull [eV/atom] 0.36
Monolayers from C2DB
Al8Se12 (4Al2Se3-1) -0.86 eV/atom
Al4Se6 (2Al2Se3-1) -0.84 eV/atom
Al4Se6 (2Al2Se3-2) -0.83 eV/atom
Al4Se6 (2Al2Se3-3) -0.81 eV/atom
Al2Se3 (1Al2Se3-1) -0.79 eV/atom
Al6Se9 (3Al2Se3-1) -0.77 eV/atom
Al2Se3 (1Al2Se3-2) -0.77 eV/atom
Al3Se4 (1Al3Se4-1) -0.72 eV/atom
Al2Se2 (2AlSe-1) -0.72 eV/atom
Al2Se2 (2AlSe-2) -0.71 eV/atom
Al2Se2 (2AlSe-3) -0.69 eV/atom
Al2Se5 (1Al2Se5-1) -0.60 eV/atom
Al2Se4 (2AlSe2-1) -0.55 eV/atom
AlSe2 (1AlSe2-1) -0.55 eV/atom
Al2Se2, (2AlSe-4) -0.36 eV/atom
Al2Se4 (2AlSe2-2) -0.31 eV/atom
Al2Se2 (2AlSe-5) -0.14 eV/atom
AlSe4 (1AlSe4-1) -0.13 eV/atom
Se2 (2Se-1) 0.21 eV/atom
Se2 (2Se-2) 0.29 eV/atom
Bulk crystals from OQMD123
Al4Se6 -0.84 eV/atom
Al 0.00 eV/atom
Se3 0.00 eV/atom

Miscellaneous details
Unique ID 2AlSe-4
Number of atoms 4
Number of species 2
Formula Se2Al2
Reduced formula SeAl
Stoichiometry AB
Unit cell area [Å2] 14.436
Original file-system folder /home/niflheim2/cmr/C2DB-ASR/tree_LDP/AB/AlSe/Al2Se2-b3656a73d6f6
Old uid Al2Se2-f7ceac809dc4
Space group (bulk in AA-stacking) P4/nmm
Space group number (bulk in AA-stacking) 129
Miscellaneous details
Point group 4/mmm
Inversion symmetry Yes
Layer group number 64
Layer group p4/nmm
2D Bravais type Square (tp)
Thickness [Å] 2.954
Structure origin Lyngby22_LDP
Dynamically stable Unknown
Energy [eV] -15.881
Energy above convex hull [eV/atom] 0.357
Heat of formation [eV/atom] -0.360
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