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Si2Se

Alexandria ALEX

Alex-ID: agm005477678 · Space group: I4_1/amd (#141)

Basic Information

Formula
Si2Se
Alex-ID
agm005477678
Elements
2
Sites
6
Space group
I4_1/amd (#141)
Crystal system
tetragonal
Volume
114.20
ų
Cell a
7.7693
Å
Cell b
7.7693
Å
Cell c
7.7693
Å
α angle
150.39
°
β angle
150.39
°
γ angle
42.37
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Si2Se
Si
4.00 · 66.7%
Se
2.00 · 33.3%

Energy & Stability

Energy above hull
0.5861
eV/atom
Formation energy
0.3600
eV/atom
Corrected total energy
-26.5133
eV
Raw total energy
-26.5133
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
1.3491
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2_49_spg141

Decomposition

SiSe2 Si

Computed at

2023-03-21 22:29:14.824011

Citation

Alexandria website
https://alexandria.icams.rub.de/
Attribution

The crystal structure and related material properties of this entry were obtained from the Alexandria database (Alex-ID: agm005477678).

Reference

Th. Cavignac, J. Schmidt, P.-P. De Breuck, A. Loew, T. F. T. Cerqueira, H.-C. Wang, A. Bochkarev, Y. Lysogorskiy, A. H. Romero, R. Drautz, S. Botti and M. A. L. Marques. AI-Driven expansion and application of the Alexandria database. J. Phys. Mater. 9, 025014 (2026). https://doi.org/10.1088/2515-7639/ae6620

BibTeX
@article{Cavignac2026Alexandria,
  author  = {Cavignac, Th{\'e}o and Schmidt, Jonathan and De Breuck, Pierre-Paul and Loew, Antoine
             and Cerqueira, Tiago F. T. and Wang, Hai-Chen and Bochkarev, Anton
             and Lysogorskiy, Yury and Romero, Aldo H. and Drautz, Ralf and Botti, Silvana
             and Marques, Miguel A. L.},
  title   = {{AI}-Driven expansion and application of the {A}lexandria database},
  journal = {Journal of Physics: Materials},
  year    = {2026},
  volume  = {9},
  number  = {2},
  pages   = {025014},
  doi     = {10.1088/2515-7639/ae6620},
  url     = {https://doi.org/10.1088/2515-7639/ae6620}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# CIF generated by HEAS from Alexandria entry agm005477678
data_agm005477678
_cell_length_a     7.76932
_cell_length_b     7.76932
_cell_length_c     7.76932
_cell_angle_alpha  150.39078
_cell_angle_beta   150.39078
_cell_angle_gamma  42.36808
_cell_volume       114.20476
_symmetry_space_group_name_H-M 'P 1'
_symmetry_Int_Tables_number 1
loop_
_symmetry_equiv_pos_as_xyz
  'x, y, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
  Si1 Si 0.58118 0.58118 0.00000 1.00000
  Si2 Si 0.16882 0.66882 0.50000 1.00000
  Si3 Si 0.41882 0.41882 0.00000 1.00000
  Si4 Si 0.33118 0.83118 0.50000 1.00000
  Se1 Se 0.00000 0.00000 0.00000 1.00000
  Se2 Se 0.75000 0.25000 0.50000 1.00000
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