17 citations · 23 across the 6 of their papers we have counts for
6 papers
Effect of charge ordering on the electrical properties and magnetoresistance of manganites
Mahrous R. Ahmed
The Monte Carlo Ferromagnetic Ising model was used to study the electrical properties of manganese oxides due to the charge ordering phase occurring at doping, x = 0.5. The half-do…
The Mn-O bonds dependence of the lattice distortion in LaMnO3
Mahrous r Ahmed, A. M. Ahmed, A. K. Diab +2
We have investigated the volume collapse occurring in LaMnO3 unit cell using the anisotropic Potts model modified by two types of anisotropic interactions which has been used to st…
Landau theory of compressible magnets near a quantum critical point
Gillian A Gehring, Mahrous R. Ahmed
Landau theory is used to investigate the behaviour of a metallic magnet driven towards a quantum critical point by the application of pressure. The observed dependence of the trans…
Theory of magnetism with temporal disorder applied to magnetically doped ZnO
Gillian A Gehring, Mahrous R Ahmed, Alex J. Crombie
A dynamic model of the asymmetric Ising glass is presented: an Ising model with antiferromagnet bonds with probabilities q arranged at random in a ferromagnetic matrix. The dynamic…
Spin Frank-Condon Effect
Mahrous R. Ahmed, G. A. Gehring
The optical properties of a small magnetic cluster are studied in a magnetic version of Frank-Condon principle. This simple model is considered to show new basic physics and could…
A Potts model for the distortion transition in LaMnO
Mahrous R. Ahmed, G. A. Gehring
The Jahn-Teller distortive transition of \lmo is described by a modified 3-state Potts model. The interactions between the three possible orbits depends both on the orbits and thei…