Absorption coefficient and relative refractive index change for a double δ-doped GaAs MIGFET-like structure: Electric and magnetic field effects

JC Martínez-Orozco, KA Rodríguez-Magdaleno… - Superlattices and …, 2016 - Elsevier
In this work we present theoretical results for the electronic structure as well as for the
absorption coefficient and relative refractive index change for an asymmetric double δ …

Intersubband linear and nonlinear optical response of the delta-doped SiGe quantum well

CA Duque, V Akimov, R Demediuk, V Belykh… - Superlattices and …, 2015 - Elsevier
The degree of ionization, controlled by external fields, of delta-doped layers inside the
quantum wells can affect their energy structure, therefore delta-doped QWs can be used to …

About possible THz modulator on the base of delta-doped QWs

CA Duque, V Akimov, R Demediuk, V Belykh… - Superlattices and …, 2015 - Elsevier
The idea about a new type of THz modulator, based on the dependence of separation
between space quantized energy levels in a quantum well (QW) on the degree of ionization …

On intersubband absorption of radiation in delta-doped QWs

V Tulupenko, CA Duque, V Akimov, R Demediuk… - Physica E: Low …, 2015 - Elsevier
The results of calculation of intersubband absorption coefficients for either center-, or edge-
delta-doped with Phosphorus 10 nm and 20 nm-wide Si 0.8 Ge 0.2/Si/Si 0.8 Ge 0.2 quantum …

Background impurities and a delta-doped QW. Part I: Center do**

V Akimov, V Tulupenko, CA Duque… - Semiconductor …, 2019 - iopscience.iop.org
The influence of shallow background donor impurities on the energy characteristics of the
SiGe/Si/SiGe quantum well structure with centered delta-do** is studied numerically. The …

Hydrogenic impurity states in a delta-layer within quantum wells in a transversal electric field

V Tulupenko, V Akimov, R Demediuk… - 2020 IEEE 40th …, 2020 - ieeexplore.ieee.org
The effect of a transversal electric field on the impurity binding energy and the energy
differences between the space-quantized subbands of center delta-doped SiGe/Si quantum …

Intersubband Energy Differences of Delta-Doped Quantum Wells in External Electric Field

V Tulupenko, V Akimov, R Demediuk… - 2022 IEEE 41st …, 2022 - ieeexplore.ieee.org
The energy differences between subbands of a semiconductor quantum well delta-doped
inside the well can be tuned by electronic temperature. The effect can be used in a novel …

Electron Tunneling in Heterostructures with Germanium Quantum Dots

SI Pokytnyi, VY Gayvoronsky - … Applications: Selected Proceedings of the IX …, 2023 - Springer
It is shown that electron tunneling through a potential barrier that separates two quantum
dots of germanium leads to the splitting of electron states localized over spherical interfaces …

Background impurities in Si0.8 Ge0.2/Si/Si0.8 Ge0.2 n‐type δ‐doped QW

V Tulupenko, CA Duque, AL Morales… - … status solidi (b), 2017 - Wiley Online Library
Additional (residual) impurities in the barriers change the energy profile of a quantum well.
This means that they alter the ionization energy for the impurity delta layer situated within the …

Background impurities in a delta-doped QW. Part II: Edge do**

V Akimov, V Tulupenko, CA Duque… - Semiconductor …, 2021 - iopscience.iop.org
This is the second part of our study of the background impurity influence on the intersubband
energy structure of a single SiGe/Si/SiGe quantum well with the impurity delta layer within …