44 citations · 132 across the 6 of their papers we have counts for
6 papers
Optical absorption in highly-strained Ge/SiGe quantum wells: the role of Γ-to-Δ scattering
L. Lever, Z. Ikonić, A. Valavanis +7
We report the observation of the quantum-confined Stark effect in Ge/SiGe multiple quantum well heterostructures grown on Si(0.22)Ge(0.78) virtual substrates. The large compressive…
Magnetotunnelling in resonant tunnelling structures with spin-orbit interaction
Goran Isić, Dragan Indjin, Vitomir Milanović +3
Magnetotunnelling spectroscopy of resonant tunnelling structures provides information on the nature of the two-dimensional electron gas in the well. We describe a model based on no…
Material configurations for n-type silicon-based terahertz quantum cascade lasers
A. Valavanis, T. V. Dinh, L. J. M. Lever +2
Silicon-based quantum cascade lasers (QCLs) offer the prospect of integrating coherent THz radiation sources with silicon microelectronics. Theoretical studies have proposed a vari…
Intersubband carrier scattering in n- and p-Si/SiGe quantum wells with diffuse interfaces
A. Valavanis, Z. Ikonić, R. W. Kelsall
Scattering rate calculations in two-dimensional Si/SiGe systems have typically been restricted to rectangular Ge profiles at interfaces between layers. Real interfaces, however, ma…
Quantum transport in semiconductor quantum dot superlattices: electron-phonon resonances and polaron effects
Nenad Vukmirović, Zoran Ikonić, Dragan Indjin +1
Electron transport in periodic quantum dot arrays in the presence of interactions with phonons was investigated using the formalism of nonequilibrium Green's functions. The self-co…
Symmetry of Hamiltonian in pyramidal InAs/GaAs quantum dots: Application to the calculation of electronic structure
Nenad Vukmirović, Dragan Indjin, Vladimir D. Jovanović +2
A method for the calculation of the electronic structure of pyramidal self-assembled InAs/GaAs quantum dots is presented. The method is based on exploiting the exact …