The parameters Delta z and Delta r are the displacements of the atoms (B and Si) from the bulk-like positions, in the first, second, etc... layers.

* indicates the parameter was fixed.

The parameter increment for the TEC analysis is unavailable, and for the Keating analysis it is 0.001 Ang.

Parameter | LEED | SXD | TEC | Keating | |

| |||||
---|---|---|---|---|---|

- | delta z = +-0.1 | delta z = +-0.20 | - | - | |

- | delta r = +-0.2 | delta r = +-0.01. | - | - | |

| |||||

Delta z_Si(0 ) | +0.25 | NA | +0.28 | +0.113 | |

Delta z_Si(1 ) | -0.30 | -0.17 | -0.30 | -0.399 | |

Delta r_Si(1 ) | -0.30 | -0.26 | -0.26 | -0.263 | |

Delta z_B (2a) | -0.50 | -0.35* | -0.37 | -0.362 | |

Delta z_Si(2b) | +0.05 | +0.06 | NA | +0.034 | |

Delta z_Si(3a) | -0.34 | 0* | -0.06 | -0.064 | |

Delta z_Si(3b) | 0 | 0* | NA | +0.029 | |

Delta r_Si(4 ) | 0 | -0.02 | NA | +0.020 |

Last Update: 6/21/96