PL EN


Preferences help
enabled [disable] Abstract
Number of results
2004 | 106 | 3 | 287-298
Article title

Oscillator Strengths for Neutral, Charged, and Scattered Excitons in CdTe Quantum Wells Containing a 2D Electron Gas

Content
Title variants
Languages of publication
EN
Abstracts
EN
Absorption spectra have been measured for a 10 nm CdTe(0.3%Mn) quantum well with electron concentration n_e variable up to 1.5×10^{11}cm^{-2}. Following recent theory appropriate to low n_e, here ≈0.1/π a_B^2, the spectra are interpreted in a "strong exciton" model, where the initial oscillator strength of the excitonic resonance (X) is conserved, with screening and phase-space filling effects negligible. As n_e increases in zero-field and as the filling factorν increases in magnetic field, the intensity of X is transferred to: (i) trion processes, namely exciton-one electron scattering and the trion resonance (T), and (ii) quatron processes, namely exciton-two electron scattering and trion-one electron scattering. In magnetic field, the three- and four-body scattering processes become discrete, combined "exciton and cyclotron" and combined "trion and cyclotron" excitations that take all the intensity of X and T for ν≾1 and ν>2, respectively.
Keywords
Year
Volume
106
Issue
3
Pages
287-298
Physical description
Dates
published
2004-09
received
2004-06-10
References
  • 1. P. Kossacki, J. Phys., Condens. Matter, 15, R471, 2003
  • 2. D.R. Yakovlev, V.P. Kochereshko, R.A. Suris, H. Schenk, W. Ossau, A. Waag, G. Landwehr, P.C.M. Christianen, J.C. Maan, Phys. Rev. Lett., 79, 3974, 1997
  • 3. B. Stébé, E. Feddi, A. Ainane, F. Dujardin, Phys. Rev. B, 58, 9926, 1998
  • 4. F.X. Bronold, Phys. Rev. B, 61, 12620, 2000
  • 5. R.A. Suris, V.P. Kochereshko, G.V. Astakhov, D.R. Yakovlev, W. Ossau, J. Nurnberger, W. Faschinger, G. Landwehr, T. Wojtowicz, G. Karczewski, J. Kossut, Phys. Status Solidi B, 227, 343, 2001
  • 6. A. Esser, R. Zimmermann, E. Runge, Phys. Status Solidi B, 227, 317, 2001
  • 7. S. Schmitt-Rink, D.S. Chemla, D.A.B. Miller, Adv. Phys., 38, 89, 1989
  • 8. P. Hawrylak, Phys. Rev. B, 44, 3821, 1991
  • 9. R.T. Cox, R.B. Miller, K. Saminadayar, T. Baron, Phys. Rev. B, 69, 235303, 2004
  • 10. A. Esser, M.A. Dupertuis, E. Runge, R. Zimmermann, in: IOP Conf. Series 171, Physics of Semiconductors 2002, Proc. 26th Intern. Conf., Edinburgh 2002, Eds. A.R. Long, J.H. Davies, IOP Publishing, Bristol 2003, p. R 4.2
  • 11. V.P. Kochereshko, M. Kutrowski, D.A. Andronikov, T. Wojtowicz, G. Karczewski, J. Kossut, Phys. Status Solidi C, 0, 1463, 2003; V.P. Kochereshko, D.R. Yakovlev, G.V. Astakhov, R.A. Suris, J. Nurnberger, W. Faschinger, W. Ossau, G. Landwehr, T. Wojtowicz, G. Karczewski, J. Kossut, in: Optical Properties of Semiconductor Nanostructures, NATO Science Series 3, Vol. 81, Eds. M.L. Sa- dowski, M. Potemski, M. Grynberg, Kluwer, Dordrecht 2000, p. 299
  • 12. R. Suris, in: Optical Properties of 2D Systems with Interacting Electrons, NATO Science Series II, Vol. 119, Eds. W.J. Ossau, R. Suris, Kluwer, Dordrecht 2003, p. 111
  • 13. V. Huard, R.T. Cox, K. Saminadayar, A. Arnoult, S. Tatarenko, Phys. Rev. Lett., 84, 187, 2000
  • 14. G. Yusa, H. Shtrikman, I. Bar-Joseph, Phys. Rev. B, 62, 15390, 2000
  • 15. R. Kaur, A.J. Shields, J.L. Osborne, M.Y. Simmons, D.A. Ritchie, M. Pepper, Phys. Status Solidi A, 175, 465, 2000
  • 16. J.A. Brum, P. Hawrylak, Comments Condens. Matter Phys., 18, 135, 1997
  • 17. K. Kheng, R.T. Cox, Y. Merle d'Aubigné, Franck Bassani, K. Saminadayar, S. Tatarenko, Phys. Rev. Lett., 71, 1752, 1993
  • 18. A. Esser, Ph. D. Thesis, Humboldt University (Berlin), Logos Verlag, Berlin 2002
  • 19. S. Lovisa, R.T. Cox, N. Magnea, K. Saminadayar, Phys. Rev. B, 56, 12787, 1997
  • 20. R.T. Cox, K. Kheng, K. Saminadayar, T. Baron, S. Tatarenko, in: High Magnetic Fields in the Physics of Semiconductors, Ed. D. Heiman, World Scientific, Singapore 1995
  • 21. P. Kossacki, J. Cibert, D. Ferrand, Y. Merle d'Aubigné, A. Arnoult, A. Wasiela, S. Tatarenko, J.A. Gaj, Phys. Rev. B, 60, 16018, 1999
  • 22. P. Płochocka, P. Kossacki, W. Maślana, J. Cibert, S. Tatarenko, C. Radzewicz, J.A. Gaj, Phys. Rev. Lett., 92, 177402, 2004
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv106n301kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.