Electron localisation in systems with purely off-diagonal randomness |
| |
Authors: | T Odagaki |
| |
Institution: | Department of Physics, The City College of the City University of New York, New York, N.Y. 10031, USA |
| |
Abstract: | A probability distribution for the off-diagonal matrix elements vnm of the tight binding Hamiltonian is assumed to be for and P(vnm = 0 otherwise. A homomorphic cluster CPA with the L(E) criterion is used to study localisation in a simple cubic lattice and a computer simulation is used to study a square lattice with the participation-ratio criterion. It is found, in both cases, that Anderson's transition takes place for a critical degree of disorder. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|