Spin-Dependent Coupling of Charged Quantum Dot Excitons with Continuum States

• Authors: B. Urbaszek , R. Warburton , K. Karrai , C. Schulhauser , A. Högele , E. McGhee , A. Govorov , B. Gerardot , X. Marie , T. Amand , P. Petroff
• Languages of publication: EN

Abstracts

EN

Magnetic field and temperature dependent photoluminescence studies on neutral and charged excitons in individual InAs quantum dots allow us to uncover different mechanisms by which the discrete quantum dot states are coupled to delocalized continuum states in a quantum well (the wetting layer). The behaviour of the neutral and singly charged excitons can be explained taking only discrete quantum dot states into account. For doubly and triply charged excitons we have to consider spin dependent coherent and incoherent interactions between discrete quantum dot states and delocalized wetting layer states.

Keywords

EN

73.21.La; 78.67.Hc

Discipline

• 78.67.Hc: Quantum dots
• 73.21.La: Quantum dots

• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 106
• Issue: 3
• Pages: 395-402

Dates

published

2004-09

received

2004-06-10

Contributors

author

B. Urbaszek

• School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
• Laboratoire de Nanophysique, Magnétisme et Optoélectronique, INSA, 135 av. de Rangueil, 31077 Toulouse Cedex 4, France

author

R. Warburton

• School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK

author

K. Karrai

• Center for NanoScience and Sektion Physik, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München, Germany

author

C. Schulhauser

• Center for NanoScience and Sektion Physik, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München, Germany

author

A. Högele

• Center for NanoScience and Sektion Physik, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München, Germany

author

E. McGhee

• School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK

author

A. Govorov

• Department of Physics and Astronomy, Ohio University, Athens, Ohio USA

author

B. Gerardot

• Materials Department, University of California, Santa Barbara, California 93106, USA

author

X. Marie

• Laboratoire de Nanophysique, Magnétisme et Optoélectronique, INSA, 135 av. de Rangueil, 31077 Toulouse Cedex 4, France

author

T. Amand

• Laboratoire de Nanophysique, Magnétisme et Optoélectronique, INSA, 135 av. de Rangueil, 31077 Toulouse Cedex 4, France

author

P. Petroff

• Materials Department, University of California, Santa Barbara, California 93106, USA

References

• 1. M. Bayer, O. Stern, P. Hawrylak, S. Fafard, A. Forchel, Nature (Lond.), 405, 923, 2000
• 2. R.J. Warburton, C. Schaflein, D. Haft, F. Bickel, A. Lorke, K. Karrai, J. Garcia, W. Schoenfeld, P.M. Petroff, Nature (Lond.), 405, 926, 2000
• 3. D. Gammon, E.S. Snow, B.V. Shanabrook, D.S. Katzer, D. Park, Science, 273, 87, 1996
• 4. P. Borri, W. Langbein, S. Schneider, U. Woggon, R.L. Sellin, D. Ouyang, D. Bimberg, Phys. Rev. Lett., 87, 157401, 2001
• 5. M. Bayer, A. Forchel, Phys. Rev. B, 65, 041308, 2002
• 6. N.H. Bonadeo, J. Erland, D. Gammon, D. Park, D.S. Katzer, D.G. Steel, Science, 282, 1473, 1998
• 7. H. Kamada, H. Gotoh, J. Temmyo, T. Takagahara, H. Ando, Phys. Rev. Lett., 87, 246401, 2001
• 8. A. Zrenner, E. Beham, S. Stufler, F. Findels, M. Bichler, G. Abstreiter, Nature, 418, 612, 2002
• 9. C. Kammerer, G. Cassabois, C. Voisin, C. Delalande, Ph. Roussignol, J.M. Ge- rard, Phys. Rev. Lett., 87, 207401, 2001
• 10. K. Karrai, R.J. Warburton, C. Schulhauser, A. Hogele, B. Urbaszek, E.J. McGhee, A.O. Govorov, J.M. Garcia, B.D. Gerardot, P.M. Petroff, Nature, 427, 135, 2004
• 11. C. Schulhauser, D. Haft, R.J. Warburton, K. Karrai, A.O. Govorov, A.V. Kalameitsev, A. Chaplik, W. Schoenfeld, J. Garcia, P.M. Petroff, Phys. Rev. B, 66, 193303, 2002
• 12. A. Hogele, B. Alen, F. Bickel, R.J. Warburton, P.M. Petroff, K. Karrai, Physica E, 21, 175, 2004
• 13. L. Besombes, K. Kheng, L. Marsal, H. Mariette, Phys. Rev. B, 63, 155307, 2001
• 14. A. Wojs, P. Hawrylak, Phys. Rev. B, 55, 13066, 1997
• 15. J.J. Finley, P.W. Fry, A.D. Ashmore, A. Lemaitre, A.I. Tartakovskii, R. Oulton, D.J. Mowbray, M.S. Skolnick, M. Hopkinson, P.D. Buckle, P.A. Maksym, Phys. Rev. B, 63, 161305, 2001
• 16. F. Findeis, M. Baier, A. Zrenner, M. Bichler, G. Abstreiter, U. Hohenester, E. Molinari, Phys. Rev. B, 63, 121309, 2001
• 17. B. Urbaszek, R.J. Warburton, K. Karrai, B.D. Gerardot, P.M. Petroff, J.M. Garcia, Phys. Rev. Lett., 90, 247403, 2003
• 18. B. Urbaszek, E.J. McGhee, M. Kruger, R.J. Warburton, K. Karrai, T. Amand, B.D. Gerardot, P.M. Petroff, J.M. Garcia, Phys. Rev. B, 69, 035304, 2004
• 19. A.O. Govorov, K. Karrai, R.J. Warburton, A.V. Kalameitsev, Physica E, 20, 295, 2004

Identifiers

DOI

10.12693/APhysPolA.106.395