Search
Now showing items 1-10 of 12
The effect of radial and angular profiles of twisted laser beam on Coronene molecule located off the optical axis
(Elsevıer Scıence Bv, 2018)
We theoretically investigate the electronic orbital currents and magnetic field induced by twisted light in C24H12 named as Coronene molecule. Main reason of induced magnetic field is the transfer of orbital angular momentum ...
Mapping photo-induced current density of Mg-porphyrin under twisted light
(Elsevıer Scıence Bv, 2017)
We report a characteristic map of the local electron circulation in Mg-porphyrin under twisted light which is a process that is strongly dependent on the frequency of photon. This work is a result of DFT calculation and ...
The angular electronic band structure and free particle model of aromatic molecules: High-frequency photon-induced ring current
(World Scıentıfıc Publ Co Pte Ltd, 2017)
This work introduces an analysis of the relationship of first-principles calculations based on DFT method with the results of free particle model for ring-shaped aromatic molecules. However, the main aim of the study is ...
Spin and orbital angular momentum transfer into GanAsn nanocage: The change in induced magnetic field by tuning the light parameters and size of the molecule
(Elsevıer Scıence Bv, 2017)
In this study, we demonstrate that the direction of a photoinduced magnetic field in semiconductor nano scale quantum dots (nanocages) can be changed by tuning the frequency and the light parameters. In the case of the ...
The effect of twisted light on the ring-shaped molecules: The manipulation of the photoinduced current and the magnetic moment by transferring spin and orbital angular momentum of high frequency light
(Elsevıer Scıence Bv, 2017)
In this study, we aim to investigate the possibility of the manipulation of an aromatic ring current and magnetic moment induced by spin angular momentum (SAM) and orbital angular momentum (OAM) carrying light by changing ...
Effect of a buffer layer between the shell and ligand on the optical properties of an exciton and biexciton in type-II quantum dot nanocrystals
(Taylor & Francıs Ltd, 2017)
In this study, we have investigated the effect of the buffer layers on the electronic and optical properties of an exciton (X) and a biexciton (XX) in a type-II CdTe/CdSe quantum dot nanocrystal. In an experimental study, ...
The electronic and optical properties of a triexciton in CdSe/ZnS core/shell quantum dot nanocrystals
(Taylor & Francıs Ltd, 2016)
In the study, we aim to investigate the electronic and optical properties of single excitons, biexcions and triexcitons in a CdSe/ZnS core/shell quantum dot nanocrystal. The electronic structure has been determined by ...
Optical manipulation of photo-induced current in spherical semiconductor quantum dots by optical vortices
(Taylor & Francıs Ltd, 2016)
In this work, we have investigated the existence of photo-induced current in AlGaAs/GaAs/SiO2 spherically symmetric semiconductor quantum dots by orbital angular momentum carrying twisted light. For the quantum dot structure, ...
Quantum size effect on the electronic transitions of GaAs/AlGaAs dots under twisted light
(Academıc Press Ltd- Elsevıer Scıence Ltd, 2015)
The aim of the study is to investigate two main effects on the electronic transitions in spherically symmetric semiconductor quantum dots. One of them is the result of the modification of the core/shell size for core shell ...
The linear optical properties of a multi-shell spherical quantum dot of a parabolic confinement for cases with and without a hydrogenic impurity
(Iop Publıshıng Ltd, 2012)
Throughout this work, we aim to explore the linear optical properties of a semiconductor multi-shell spherical quantum dot with and without a hydrogenic donor impurity. The core and well layers are defined by the parabolic ...