Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2007-08-13
Superlattices and Microstructures, 25, 1-2, p 431 (1998)
Physics
Condensed Matter
Disordered Systems and Neural Networks
see erratum 10.1006/spmi.1998.0702
Scientific paper
10.1006/spmi.1998.0670
The "atomic saw method" uses the passage of dislocations in two-dimensional (2D) quantum-well superlattices to create periodic slipping layers and one-dimensional (1D) quantum wire superlattices. The effects of this space structuring of the samples on the allowed energies are analysed in the case of GaAs d-doped superlattices. If they are sufficiently large, the various minigaps appearing in the 1D band structure could be responsible for the presence of negative differential resistance (NDR) with high critical current in these systems. The purpose is to determine the evolution of the minigaps in terms of the sample parameters and to obtain the means to determine both the 2D and 1D structural characteristics where NDR could appear.
Ferrus T.
Goutiers B.
Peyrade J. P.
Porto J. A.
Ressier L.
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