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Silicon

Silicon (diamond cubic, a = 5.431 Å) has 4-fold tetrahedral coordination with a single Si-Si-Si bond angle of 109.5°. It is the reference case for the six disorder regimes.

Overview

All six regimes at 40 × 40 × 40 Å, rotating in sync. Drag any panel to orbit manually.

g(r) per regime overlaid on a single axis. The dropdown below the plot switches species pair; the legend identifies each curve by the regime it was measured from:

Reference crystal

from ase.build import bulk
atoms = bulk('Si', 'diamond', a=5.431)

Disorder regimes

Click any regime for the full interactive trajectory viewer and g3 distribution.

Preset summary

liquid and nanocrystalline keep the library atomode.Supercell.PRESETS defaults; the in-between regimes use explicit per-cell parameters tuned so the polyhedron count walks a clear ladder from disordered (liquid → ~110 tetrahedra detected at the polyhedra-detector tolerances bond_length_tol=0.10, angle_tol_deg=18) through to crystalline (NC → ~1300).

Presetnum_stepsGrain (Å)bond_weightangle_weightrepulsion_weighthard_core_scalenonbond_push_scaledisplacement_sigma
liquid100-0.40.50.50.750.7-
amorphous120-0.60.201.30.860.450.12
SRO1808.01.50.51.80.910.600.06
MRO20012.02.00.82.20.930.750.04
LRO20015.02.41.02.30.930.850.035
nanocrystalline15020.03.01.5---0.02