210 citations · 527 across the 11 of their papers we have counts for
11 papers
Small Polaron Formation on the Nb-doped SrTiO(001) Surface
Florian Ellinger, Muhammad Shafiq, Iftikhar Ahmad +2
The cubic perovsike strontium titanate SrTiO (STO) is one of the most studied, polarizable transition metal oxides. When excess charge is introduced to this material, e.g., thr…
Superluminal light propagation in a bi-chromatically Raman-driven and Doppler-broadened N-type 4-level atomic system
Bakht Amin Bacha, Fazal Ghafoor, Iftikhar Ahmad
We investigate the behavior of fast light pulse propagation in an N-type Doppler-broadened 4-level atomic system using double Raman gain processes. This system displays novel and i…
Hole-burning in an Autler-Townes doublet and in superluminal (subluminal) Electromagnetically induced transparency of a light pulse via a joint nonlinear coherent Kerr effect and Doppler broadening
Bakhtt A Bacha, Fazal Ghafoor, Iftikhar Ahmad
We investigate the behavior of light pulse propagation in a 4-level double Lambda atomic system under condition of electromagnetically induced transparency. The Fano type interfere…
Accurate theoretical bandgap calculations of II-VI semiconductors
Imad Khan, Iftikhar Ahmad, H. A. Rahnamaye Aliabad +1
In this letter we present band gaps of II-VI semiconductors, calculated by the full potential linearized augmented plane wave (FP-LAPW) method with the modified Becke-Johnson (mBJ)…
Linear and non-linear optical response of Mg(x)Zn(1-x)O: A Density Functional study
G. Murtaza, Iftikhar Ahmad, B. Amin +3
Total and partial density of states, frequency dependent complex refractive index including extinction coefficient, optical conductivity and transmission of MgxZn1-xO (0 \leq x \le…
Bandgap engineering of Cd1-xSrxO
I. Khan, Iftikhar Ahmad, B. Amin +2
Structural, electronic and optical properties of Cd1-xSrxO (0 \leq x \leq 1) are calculated for the first time using density functional theory. Our results show that these properti…