63 citations · 82 across the 5 of their papers we have counts for
5 papers
First Principles Calculation of Field Emission from Carbon Nanotubes With Nitrogen and Boron Doping
Sherif Tawfik, Salah Sheikh, Noha Salem
We investigate the field emission properties of nitrogenated and boronated carbon nanotubes using time-dependent density functional theory, were the wave function propagation is pe…
First Principles Calculation of Field Emission from Nanostructures using Time-Dependent Density Functional Theory: a Simplified Approach
Sherif Tawfik, Salah El Sheikh, Noha Salem
We introduce a new simplified method for computing the electron field emission current in short carbon nanotubes using ab-initio computation in periodic simulation cells. We comput…
Sr impurity effects on the magnetic correlations of LaSrCuO
R. J. Gooding, N. M. Salem, R. J. Birgeneau +1
We examine the low-temperature magnetic properties of moderately doped LaSrCuO paying particular attention to the spin-glass (SG) phase and the C-IC transition as they are affected…
The annealed positions of ferromagnetic bonds doped into a 2D antiferromagnet
N. M. Salem, R. J. Gooding
We determine where a given concentration of ferromagnetic (FM) bonds doped into a square lattice antiferromagnet must go to minimize the system's total magnetic energy. We find (i)…
The orbital relaxation: a possible origin of t-J model with large J
Alessandro Fortunelli, Anna Painelli
Whereas the t-J model has gained wide popularity among physicists as a model for high-T_C superconductivity, its physical origin is not at all clear. In this communication we show…