139 citations · 299 across the 12 of their papers we have counts for
12 papers
Optical probing of the carriers-mediated coupling of the spin of two Co atoms in a quantum dot
L. Besombes, J. Kobak, W. Pacuski
We report on the optical spectroscopy of the spin of two Co atoms in a quantum dot and interacting with a single exciton. The spectrum of quantum dots containing two Co atoms are e…
Direct measurement of hyperfine shifts and radiofrequency manipulation of the nuclear spins in individual CdTe/ZnTe quantum dots
G. Ragunathan, J. Kobak, G. Gillard +5
We achieve direct detection of electron hyperfine shifts in individual CdTe/ZnTe quantum dots. For the previously inaccessible regime of strong magnetic fields T, w…
Direct determination of zero-field splitting for single Co ion embedded in a CdTe/ZnTe quantum dot
J. Kobak, A. Bogucki, T. Smoleński +6
When Co impurity is embedded in semiconductor structure, crystal strain strongly influences zero-filed splitting between Co states with spin projection $S_z = \pm 3/2…
Anisotropy of in-plane hole g-factor in CdTe/ZnTe quantum dots
A. Bogucki, T. Smoleński, M. Goryca +5
Optical studies of a bright exciton provide only limited information about the hole anisotropy in a quantum dot. In this work we present a universal method to study heavy hole anis…
Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots
J. Kobak, T. Smoleński, M. Goryca +13
We present a comparative study of two self-assembled quantum dot (QD) systems based on II-VI compounds: CdTe/ZnTe and CdSe/ZnSe. Using magneto-optical techniques we investigated a…
Magnetic Ground State of an Individual Fe2+ Ion in Strained Semiconductor Nanostructure
T. Smoleński, T. Kazimierczuk, J. Kobak +4
We investigate spin properties of a Fe2+ dopant, known for having single nondegenerate ground state in bulk host semiconductor. Due to zero magnetic moment such a ground state is o…
Influence of ZnTe based distributed Bragg reflectors on the yellow range luminescence of self assembled CdTe QDs
Jean-Guy Rousset, Jakub Kobak, Elżbieta Janik +7
The influence of a distributed Bragg reflector composed of ZnTe, MgTe, and MgSe superlattices on photoluminescence of self assembled CdTe quantum dots (QD) emitting in the yellow s…
MBE grown microcavities based on selenium and tellurium compounds
J. -G. Rousset, T. Jakubczyk, J. Kobak +10
In this work, we present three groups of microcavities: based on selenium compounds only, based on tellurium compounds only, and structures based on mixed selenium and tellurium co…
Designing quantum dots for solotronics
J. Kobak, T. Smoleński, M. Goryca +11
Solotronics, optoelectronics based on solitary dopants, is an emerging field of research and technology reaching the ultimate limit of miniaturization. It aims at exploiting quantu…
Optical study of electron-electron exchange interaction in CdTe/ZnTe quantum dots
T. Kazimierczuk, T. Smoleński, J. Kobak +7
We present an experimental study of electron-electron exchange interaction in self-assembled CdTe/ZnTe quantum dots based on the photoluminescence measurements. The character and s…
MBE growth and characterization of a II-VI distributed Bragg reflector and microcavity lattice-matched to MgTe
J. -G. Rousset, J. Kobak, T. Slupinski +7
We present the realization and characterization of a 20 fold, fully lattice-matched epitaxial distributed Bragg reflector based on (Cd,Zn)Te and (Cd,Zn,Mg)Te layers. We also presen…
Ultra low density of CdTe quantum dots grown by MBE
J. Kobak, J. -G. Rousset, R. Rudniewski +5
This work presents methods of controlling the density of self-assembled CdTe quantum dots (QDs) grown by molecular beam epitaxy. Two approaches are discussed: increasing the deposi…