Dynamics of the Electric Field in a GaAs/AlGaAs Superlattice after Femtosecond Optical Excitation: Application of Time-Resolved Spectroscopic Techniques

• Authors: A. Lisauskas , C. Blöser , R. Sachs , H. Roskos , A. Juozapavičius , G. Valušis , K. Köhler
• Languages of publication: EN

Abstracts

EN

We apply time-resolved photocurrent and differential electroreflectance spectroscopy to study the evolution of the internal field in a GaAs/AlGaAs superlattice after pulsed optical excitation at low temperature. The electric field dynamics is investigated by tracing the spectral position of the Wannier-Stark transitions as a function of delay time. We determine the electron sweep-out time, extract detailed information about the picosecond-time-scale drift of the charge carriers by comparing the measured data with the results of semi-classical self-consistent model calculations, and evaluate the two experimental techniques with respect to their ability to provide information about the carrier and field dynamics.

Keywords

EN

03.65.Sq; 78.47.+p

Discipline

• 03.65.Sq: Semiclassical theories and applications

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 2
• Pages: 250-255

Dates

published

2005-02

received

2004-08-22

Contributors

author

A. Lisauskas

• Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany

author

C. Blöser

• Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany

author

R. Sachs

• Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany

author

H. Roskos

• Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany

author

A. Juozapavičius

• Semiconductor Physics Institute, Vilnius 01108, Lithuania

author

G. Valušis

• Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany
• Semiconductor Physics Institute, Vilnius 01108, Lithuania

author

K. Köhler

• Fraunhofer-Institut für Angewandte Festkörperphysik, Freiburg 79108, Germany

References

• 1. J. Feldmann, K. Leo, J. Shah, D.A.B. Miller, J.E. Cunnigham, S. Schmitt-Rink, T. Meier, G. von Plessen, A. Schulze, P. Thomas, Phys. Rev. B, 46, 7252, 1992
• 2. C. Waschke, H.G. Roskos, R. Schwendler, K. Leo, H. Kurz, K. Kohler, Phys. Rev. Lett., 70, 3319, 1993
• 3. M. Holthaus, Phys. Rev. Lett., 69, 351, 1992
• 4. B. Rosam, F. Loser, V.G. Lyssenko, K. Leo, S. Glutsch, F. Bechstedt, K. Kohler, Physica B, 272, 180, 1999
• 5. J. Kastrup, R. Klann, H.T. Grahn, K. Ploog, L.L. Bonilla, J. Galan, M. Kindelan, M. Moscoso, R. Merlin, Phys. Rev. B, 55, 2476, 1997
• 6. J. Kastrup, R. Klann, H.T. Grahn, K. Ploog, L.L. Bonilla, J. Galan, M. Kindelan, M. Moscoso, R. Merlin, Phys. Rev. B, 52, 13761, 1995
• 7. S.A. Ktitorov, G.S. Simin, V.Y. Sindalovskii, Sov. Phys.-Solid State, 13, 1872, 1972
• 8. A.A. Ignatov, K.F. Renk, E.P. Dodin, Phys. Rev. Lett., 70, 1996, 1993
• 9. H. Willenberg, G.H. Dohler, J. Faist, Phys. Rev. B, 67, 085315, 2003
• 10. E. Schomburg, N.V. Demarina, K.F. Renk, Phys. Rev. B, 67, 155302, 2003
• 11. A. Lisauskas, C. Bloser, R. Sachs, H.G. Roskos, A. Juozapavi cius, G. Valusis, K. Kohler, submitted to Appl. Phys. Lett
• 12. L. Esaki, R. Tsu, IBM J. Res. Dev., 40, 61, 1970

Identifiers

DOI

10.12693/APhysPolA.107.250