Common geometries
A selection of default geometries that sisl
can construct on the fly.
While this is far from complete we encourage users to contribute additional geometries via a pull request.
All methods returns a Geometry object.
Some of the geometries are created in section based geometries, such as heteroribbon
.
This functionality is provided through the composite_geometry
.
Bulk
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Simple cubic lattice with 1 atom |
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Body centered cubic lattice with 1 (non-orthogonal) or 2 atoms (orthogonal) |
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Face centered cubic lattice with 1 (non-orthogonal) or 4 atoms (orthogonal) |
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Hexagonal closed packed lattice with 2 (non-orthogonal) or 4 atoms (orthogonal) |
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Diamond lattice with 2 atoms in the unitcell |
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Two-element rocksalt lattice with 2 (non-orthogonal) or 8 atoms (orthogonal) |
Surfaces (slabs)
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Construction of a surface slab from a body-centered cubic (BCC) crystal |
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Surface slab forming a face-centered cubic (FCC) crystal |
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Surface slab forming a rock-salt crystal (halite) |
0D materials
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Hexagonal flake of a honeycomb lattice, with zig-zag edges. |
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Hexagonal flake of graphene, with zig-zag edges. |
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Construction of an [n]-triangulene geometry |
1D materials
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Construction of a nanoribbon unit cell of type armchair, zigzag or (n,m)-chiral. |
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Construction of an armchair graphene nanoribbon |
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Construction of a zigzag graphene nanoribbon |
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Construction of an (n, m, w)-chiral graphene nanoribbon |
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Construction of a graphene nanoribbon |
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Nanotube with user-defined chirality. |
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Build a nanoribbon consisting of several nanoribbons of different widths. |
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Build a graphene nanoribbon consisting of several nanoribbons of different widths |
2D materials
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Honeycomb lattice with 2 or 4 atoms per unit-cell, latter orthogonal cell |
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Commensurate unit cell of a hexagonal bilayer structure, possibly with a twist angle. |
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Graphene lattice with 2 or 4 atoms per unit-cell, latter orthogonal cell |
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A hexagonal unit-cell with 1 or 2 atoms in the basic unit cell |
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A goldene unit-cell with 1 or 2 atoms in the basic unit cell |
Helpers
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Creates a composite geometry from a list of sections. |