## Abstract

The density of states (DS) of a disordered system with localised electronic states is studied in the vicinity of the Fermi level with the Monte-Carlo computer simulation for the two- and three-dimensional simple model. The minimisation of the total energy with respect to all one-electron transitions is shown to be a good approximation both for the total energy and for the DS. The electron-electron interaction drastically changes the DS in the vicinity of the Fermi level. The DS is shown to have a 'soft' Coulomb gap, and the self-consistent equation fits the results of simulation well. The finite size effect is also studied.

Original language | English (US) |
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Article number | 015 |

Pages (from-to) | 1023-1034 |

Number of pages | 12 |

Journal | Journal of Physics C: Solid State Physics |

Volume | 12 |

Issue number | 6 |

DOIs | |

State | Published - Dec 1 1979 |