Home page of W. Pacuski

     

Laboratory of Molecular Beam Epitaxy (MBE)

Molecular Beam Epitaxy is a crystal growth technique. In MBE growth is realized in ultra high vacuum, at very low deposition rate - about one monolayer per second. We are using MBE for growth of semiconductor heterostructures: thin layers, quantum wells, quantum dots, nanowires, microcavities, diluted magnetic semiconductors.

Our MBE machine contains two growth chambers:
- II-VI chamber for growth of tellurides and selenides.
- III-V chamber for growth of arsenides and antimonides.


The lab was founded in 2011 in the frame of Center for Preclinical Research and Technology (CePT). It belongs to the Solid State Physics Division, Institute of Experimental Physics, Faculty of Physics, University of Warsaw. In 2014 our lab was moved to the clean room in building Cent I. After a few months break we restarted growth in February 2015.

The machine was fabricated and delivered by

MBE lab at Faculty of Physics, University of Warsaw

Our Team :


Dr. Wojciech Pacuski, responsible for II-VI chamber

Dr. Tomasz Słupiński, responsible for III-V chamber


Dr. Elżbieta Janik

Dr. Jakub Kobak and Dr. Jean-Guy Rousset


We have grown so far more than 1200 samples. In II-VI growth chamber:

- ZnSe, CdSe, ZnTe, CdTe, CdZnTe, CdMgTe layers,
- Diluted Magnetic Semiconductors with Mn, Co, Fe
- Quantum Wells
- Quantum Dots
- Distributed Bragg Reflectors
- Microcavities
- Quantum dots for solotronics:

* CdTe/ZnTe quantum dots including QDs with ultra low density and with single manganese ions
* CdTe/ZnTe quantum dots with single cobalt ions reported for the first time
* CdSe/ZnSe quantum dots with single manganese ions reported for the first time
* CdSe/ZnSe quantum dots with single iron (Fe2+) ions reported for the first time

In III-V growth chamber:

- GaAs, AlAs, and GaInAs layers,
- GaInAs/GaAs and GaAs/GaAlAs quantum wells,
- InAs/GaAs quantum dots,
- GaAs/AlAs Distrubuted Bragg Reflectors and microcavites.

Publications based on samples grown in our MBE lab:

   33. "Effect of magnetic field on the lasing threshold of a semimagnetic polariton condensate",
J.-G. Rousset, B. Piętka, M. Król, R. Mirek, K. Lekenta, J. Szczytko, W. Pacuski, M. Nawrocki,
Phys. Rev. B 96, 125403 (2017), or preprint, arXiv:1707.00252.

   32. "Design and control of mode interaction in coupled ZnTe optical microcavities",
M. Ściesiek, W. Pacuski, J-G. Rousset, M. Parlińska-Wojtan, A. Golnik, J. Suffczyński,
Cryst. Growth Des. 17, 3716 (2017), or preprint, arXiv:1703.03226, (2017).

31. "Origin of luminescence quenching in structures containing CdSe/ZnSe quantum dots with a few Mn2+ ions",
K. Oreszczuk, M. Goryca, W. Pacuski, T. Smoleński, M. Nawrocki, P. Kossacki,
Preprint, arXiv:1702.06687, (2017).

30. "Fine structure of an exciton coupled to a single Fe2+ ion in a CdSe/ZnSe quantum dot",
T. Smoleński,. T. Kazimierczuk, M. Goryca, W. Pacuski, and P. Kossacki,
Preprint, arXiv:1702.06094, (2017).

29. "Direct determination of zero-field splitting for single Co2+ ion embedded in a CdTe/ZnTe quantum dot",
J. Kobak, A. Bogucki, T. Smoleński, M. Papaj, M. Koperski, M. Potemski, P. Kossacki, A. Golnik, W. Pacuski,
Preprint, arXiv:1610.05732, (2016).

   28. "Antireflective photonic structure for coherent nonlinear spectroscopy of single magnetic quantum dots",
W. Pacuski, J.-G. Rousset, V. Delmonte, T. Jakubczyk, K. Sobczak, J. Borysiuk, K. Sawicki, E. Janik, J. Kasprzak,
Cryst. Growth Des. 17, 2987 (2017), or preprint, arXiv:1703.08062, (2017).

27. "Donor-deactivating defects above the equilibrium doping limit in GaAs:Te,Ge and GaAs:Te studied by annealing and Hall effect under pressure",
T. Slupinski, D. Wasik, J. Przybytek,
Journal of Crystal Growth 468, 433 (2017).

26. "Efficient Emission from InAlGaAs Single Quantum Dots with Low Lattice Misfit and AlGaAs Indirect Bandgap Barrier",
T. Słupiński, K.P. Korona, J. Papierska, J. Borysiuk,
Acta Physica Polonica A 130, 1229 (2016).

   25. "Angular dependence of giant Zeeman effect for semi-magnetic cavity polaritons",
R. Mirek, M. Król, K. Lekenta, J.-G. Rousset, M. Nawrocki, J. Szczytko, M. Kulczykowski, M. Matuszewski, W. Pacuski, B. Piętka,
Phys. Rev. B 95, 085429 (2017), or free access preprint arXiv:1609.00405.

   24. "Magnetic Ground State of an Individual Fe2+ Ion in Strained Semiconductor Nanostructure"
T. Smoleński, T. Kazimierczuk, J. Kobak, M. Goryca, A. Golnik, P. Kossacki, W. Pacuski,
Nature Communications 7, 10484 (2016).[BibTeX
Supplementary Information.  

   23. "Effect of electron-hole separation on optical properties of individual Cd(Se,Te) quantum dots",
M. Ściesiek, J. Suffczyński, W. Pacuski, M. Parlińska-Wojtan, T. Smoleński, P. Kossacki, and A. Golnik,
Phys. Rev. B 93, 195313 (2016),or free access preprint arXiv:1603.00313.


   22. "Anisotropy of in-plane hole g factor in CdTe/ZnTe quantum dots",
A. Bogucki, T. Smoleński, M. Goryca, T. Kazimierczuk, J. Kobak, W. Pacuski, P. Wojnar, and P. Kossacki,
Phys. Rev. B 93, 235410 (2016),or free access preprint arXiv:1604.02591.


   21. "Distributed Bragg reflectors obtained by combining Se and Te compounds: Influence on the luminescence from CdTe quantum dots",
J.-G. Rousset, J. Kobak, E. Janik, M. Parlinska-Wojtan, T. Slupinski, A. Golnik, P. Kossacki, M. Nawrocki, W. Pacuski,
   20. "Epitaxial growth and Photoluminescence Excitation spectroscopy of CdSe Quantum Dots in (Zn,Cd)Se barrier",
J. Piwowar, W. Pacuski, T. Smoleński, M. Goryca, A. Bogucki, A. Golnik, M. Nawrocki, P. Kossacki, J. Suffczyński,
Journal of Luminescence 173, 94 (2016),or free access preprint arXiv:1512.07929.


   19. "Strong coupling and polariton lasing in Te based microcavities embedding (Cd,Zn)Te quantum wells",
J.-G. Rousset, B. Piętka, M. Król, R. Mirek, K. Lekenta, J. Szczytko, J. Borysiuk, J. Suffczyński, T. Kazimierczuk, M. Goryca, T. Smoleński, P. Kossacki, M. Nawrocki, W. Pacuski.
Applied Physics Letters 107, 201109 (2015), or free access preprint arXiv:1510.04723

   18. J. Kobak, T. Smoleński, M. Goryca, M. Papaj, K. Gietka, A. Bogucki, M. Koperski, J.-G. Rousset, J. Suffczyński, E. Janik, M. Nawrocki, A. Golnik, P. Kossacki, W. Pacuski,
"Designing quantum dots for solotronics"
Nature Communications 5, 3191 (2014). [BibTeX
Supplementary Information.  
More details of the experiment, arXiv:1408.1981 (2014).  

   17."Optical spin orientation of an individual Mn2+ ion in a CdSe/ZnSe quantum dot"
T. Smoleński, W. Pacuski, M. Goryca, M. Nawrocki, A. Golnik, and P. Kossacki,
Phys. Rev. B 91, 045306 (2015).
Extended version: arXiv:1408.2928 (2014).

16. T. Smoleński,
CdSe/ZnSe quantum dot with a single Mn2+ ion - a new system for a single spin manipulation
J. Appl. Phys. 117, 112805 (2015).
arXiv:1408.1981 (2014).

   15. K. Sawicki, F. K. Malinowski, K. Gałkowski, T. Jakubczyk, P. Kossacki, W. Pacuski, J. Suffczyński,
"Single-color, in situ photolithography marking of individual CdTe/ZnTe quantum dots containing a single Mn2+ ion",
Appl. Phys. Lett. 106, 012101 (2015).

14. M.J. Grzybowski, A. Golnik, M. Sawicki, W. Pacuski,
"Effect of magnetic field on intraionic photoluminescence of (Zn,Co)Se",
Solid State Commun. 208, 7 (2015).

   13. W. Pacuski,
Individual cobalt and manganese ions in semiconductor quantum dots and photonic structures,
Proc. SPIE 9167, Spintronics VII, 91670K (2014); doi:10.1117/12.2063774

   12. J.-G. Rousset, J. Kobak, E. Janik, M. Parlinska-Wojtan, T. Słupinski, J. Suffczyński, A. Golnik, P. Kossacki, M. Nawrocki, W. Pacuski,
Influence of ZnTe based distributed Bragg reflectors on the yellow range luminescence of self assembled CdTe QDs,
arXiv:1411.0525 (2014).

   11. J.-G. Rousset, J. Kobak, E. Janik, T. Jakubczyk, R. Rudniewski, P. Piotrowski, M. Ściesiek, J. Borysiuk, T. Slupinski, A. Golnik, P. Kossacki, M. Nawrocki, W. Pacuski,
MBE grown microcavities based on selenium and tellurium compounds,
Journal of Crystal Growth 401, 499 (2014).

10. K. Gietka, J. Kobak, E. Janik, J.G. Rousset, J. Borysiuk, M. Nawrocki, A. Golnik, P. Kossacki, W. Pacuski,
The impact of position of Mn ?-doping on the formation of CdTe/ZnTe quantum dots with single magnetic ions,
Journal of Crystal Growth 401, 640 (2014).

9. M. Papaj, J. Kobak, J.G. Rousset, E. Janik, M. Nawrocki, P. Kossacki, A. Golnik, W. Pacuski,
Photoluminescence studies of giant Zeeman effect in MBE-grown cobalt-based dilute magnetic semiconductors,
Journal of Crystal Growth 401, 644 (2014).

8. M. Pilat , M. Goryca, T. Smoleński, W. Pacuski, P. Kossacki,
Photoluminescence Dynamics of CdSe Quantum Dot with Single Mn2+ Ion Under Modulated Excitation
Acta Physica Polonica A 126, 1212 (2014). [pdf]

7. R. Rudniewski, J.-G. Rousset, E. Janik, P. Kossacki, A. Golnik, M. Nawrocki, W. Pacuski,
Type I CdSe and CdMgSe Quantum Wells
Acta Physica Polonica A 126, 1167 (2014). [pdf]

   6. J. Kobak, J.-G. Rousset, R. Rudniewski, E. Janik, T. Słupiński, P. Kossacki, A. Golnik, W. Pacuski,
Ultra low density of CdTe quantum dots grown by MBE,
Journal of Crystal Growth 378, 274 (2013).

   5. J.-G. Rousset, J. Kobak, T. Slupinski, T. Jakubczyk, P. Stawicki, E. Janik, M. Tokarczyk, G. Kowalski, M. Nawrocki, W. Pacuski,
MBE growth and characterization of a II-VI distributed Bragg reflector and microcavity lattice-matched to MgTe,
Journal of Crystal Growth 378, 266 (2013).

4. J. Piwowar, J. Papierska, K. Sawicki, J. Kobak, W. Pacuski, A. Golnik, P. Kossacki, J. Suffczyński,
Optical Properties of CdTe QDs in Proximity to a Surface
Acta Physica Polonica A 124, 795 (2013). [pdf]

   3. K. Gietka, J. Kobak, J.-G. Rousset, E. Janik, T. Słupiński, P. Kossacki, A. Golnik and W. Pacuski,
MBE Growth of CdTe/ZnTe Quantum Dots with Single Mn Ions,
Acta Physica Polonica A 122, 1056 (2012).

2. M. Papaj, J. Kobak, J.-G. Rousset, E. Janik, A. Golnik, P. Kossacki and W. Pacuski,
MBE Growth and Magnetooptical Properties of (Zn,Co)Te Layers,
Acta Physica Polonica A 122, 1010 (2012).

   1. J.-G. Rousset, T. Słupinski, T. Jakubczyk, J. Kobak, P. Stawicki, K. Gołasa, A. Babinski, M. Nawrocki, W. Pacuski,
MBE Growth and Characterization of a III-V Distributed Bragg Reflectors and InAs Quantum Dots
Acta Physica Polonica A 122, 984 (2012).


We are open to scientific cooperation.
Visit home page of dr. Dr. Wojciech Pacuski


We started growth on September 29, 2011.

RHEED image of our first layer, GaAs on GaAs substrate.

Our MBE in a new cleanroom