Characterization of Self-Assembled CdTe/ZnTe Quantum Dots

• Authors: K. Kowalik , A. Kudelski , A. Golnik , J. Gaj , G. Karczewski , J. Kossut
• Languages of publication: EN

Abstracts

EN

We present microluminescence investigations of self-assembled CdTe/ZnTe quantum dots. The dots proprieties resulting from our studies are: values of optical in-plane anisotropy parameters (electron - heavy hole exchange splitting and orientation of anisotropy) and value of effective Lande factor. Parameters giving information about in-plane anisotropy possess random distribution of values with the exchange splitting from 0 to 240 μeV. The effective Lande factor values for our dots are around g^*=-3.2 with a scatter of about 18%. Some PL lines exhibit sudden jumps of energetic position, related to variation of the charge state in their neighborhood.

Keywords

EN

78.67.Hc; 71.70.Ej

Discipline

• 78.67.Hc: Quantum dots
• 71.70.Ej: Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect

• Journal: Acta Physica Polonica A
• Year: 2003
• Volume: 103
• Issue: 6
• Pages: 539-544

Dates

published

2003-06

received

2003-05-30

Contributors

author

K. Kowalik

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

A. Kudelski

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

A. Golnik

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

J. Gaj

• Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warszawa, Poland

author

G. Karczewski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

J. Kossut

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

References

• 1. G. Karczewski, S. Maćkowski, M. Kutrowski, T. Wojtowicz, J. Kossut, Appl. Phys. Lett., 74, 3011, 1999
• 2. A. Kudelski, A. Golnik, J.A. Gaj, S. Maćkowski, G. Karczewski, J. Kossut, in: Proc. 25th Internat. Conf. Phys. Semicond., Osaka 2000, Eds. N. Miura, T. Ando, Springer Proc. in Physics, 87, Springer Verlag, Berlin 2001, p. 1249
• 3. J. Jasny, J. Sepiol, T. Irngartinger, M. Traber, A. Renn, U.P. Wild, Rev. Sci. Instrum., 67, 1425, 1996
• 4. H.W. van Kasteren, E.C. Cosman, W.A.J.A. van der Poel, C.T. Foxon, Phys. Rev. B, 41, 5283, 1990
• 5. L. Besombes, L. Marsal, K. Kheng, T. Charvolin, Le Si Dang, A. Wasiela, H. Mariette, J. Cryst. Growth, 214/215, 742, 2000
• 6. L. Besombes, K. Kheng, L. Marsal, H. Mariette, Phys. Rev. B, 65, 121314(R), 2002

Identifiers

DOI

10.12693/APhysPolA.103.539