Excitonic Magnetoabsorption of Cylindrical Quantum Disks

• Authors: P. Schillak , G. Czajkowski
• Languages of publication: EN

Abstracts

EN

We show how to compute the optical functions (the complex magnetosusceptibility, dielectric function, magnetoreflection) for semiconductor quantum disks exposed to a uniform magnetic field in the growth direction, including the excitonic effects. The method uses the microscopic calculation of nanostructure excitonic wave functions and energy levels, and the macroscopic real density matrix approach to compute the electromagnetic fields and susceptibilities. The electron-hole screened Coulomb potential is adapted and the valence band structure is taken into account in the cylindrical approximation, thus separating light- and heavy-hole motions. The confinement potentials are taken as step-like both in the z and in-plane directions. Numerical calculations have been performed for In_{0.55}Al_{0.45}As (disk)/Al_{0.35}Ga_{0.65}As (barrier) and InP/GaP disks and the results are in a good agreement with the available experimental data.

Keywords

EN

78.67.Hc; 73.22.Dj; 73.21.La; 71.35.Ji

Discipline

• 78.67.Hc: Quantum dots
• 71.35.Ji: Excitons in magnetic fields; magnetoexcitons
• 73.22.Dj: Single particle states
• 73.21.La: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 5
• Pages: 888-890

Dates

published

2011-11

Contributors

author

P. Schillak

• University of Technology and Life Sciences, Bydgoszcz, Poland

author

G. Czajkowski

• University of Technology and Life Sciences, Bydgoszcz, Poland

References

• 1. G. Czajkowski, L. Silvestri, Central Europ. J. Phys. 4, 254 (2006)
• 2. P. Schillak, G. Czajkowski, Acta Phys. Pol. A 112, 301 (2007)
• 3. P. Schillak, G. Czajkowski, Phys. Status Solidi C 5, 2495 (2008)
• 4. P. Schillak, G. Czajkowski, Phys. Status Solidi C 6, 415 (2009)
• 5. P. Schillak, G. Czajkowski, Acta Phys. Pol. A 116, 833 (2009)
• 6. P. Schillak, G. Czajkowski, J. Phys. Conf. Series 210, 012016 (2010)
• 7. A. Stahl, I. Balslev, Electrodynamics of the Semiconductor Band Edge, Springer, Berlin 1987
• 8. G. Czajkowski, F. Bassani, L. Silvestri, Riv. Nuovo Cim. C 26, 1 (2003)
• 9. P.D. Wang, J.L. Merz, S. Fafard, R. Leon, D. Leonard, G. Medeiros-Ribeiro, M. Oestreich, P.M. Petroff, K. Uchida, N. Miura, H. Akiyama, H. Sakaki, Phys. Rev. B 53, 16458 (1996)
• 10. K. L Janssens, F.M. Peeters, V.A. Schweigert, Phys. Rev. B 63, 205311 (2001)
• 11. C. v. Dewitz, F. Hatami, M. Millot, J.M. Broto, J. Léotin, W.T. Masselink, Appl. Phys. Lett. 95, 151105 (2009)

Identifiers

DOI

10.12693/APhysPolA.120.888