Abstract
Coherent phonon oscillations are investigated in a series of Ga1−xMn x As layers with different Mn and hole concentrations. The longitudinal optical (LO)-phonon-hole-plasmon coupled mode oscillations are observed in layers with large Mn concentrations. The energies of these coupled modes depend on the hole concentrations, which may prove useful for determining this parameter in ferromagnetic alloys. Finally, electron-plasmon coupling with LO phonon, observed under optical excitation, is compared in GaMnAs and in LT-GaAs.
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References
H. Ohno, M. Munekata, T. Penney, S. von Molnar, and L. Chang, Phys. Rev. Lett. 68, 2664 (1992).
H. Ohno, A. Shen, F. Matsukura, A. Oiwa, A. Endo, S. Katsumoto, and Y. Iye, Appl. Phys. Lett. 69, 363 (1996).
T. Dietl, H. Ohno, F. Matsukura, J. Cibert, and D. Ferrand, Science 287, 1019 (2000).
F. Matsukura, H. Ohno, A. Shen, and Y. Sugawara, Phys. Rev. B 57, R2037 (1998).
G. C. Cho, W. Kutt, and H. Kurz, Phys. Rev. Lett. 65, 764 (1990).
K. J. Yee, K. G. Lee, E. Oh, D. S. Kim, and Y. S. Lim, Phys. Rev. Lett. 88, 105501 (2002).
Y. S. Lim, S. C. Yoon, K. J. Yee, Y. H. Ahn, E. Oh, and J. H. Lee, Appl. Phys. Lett. 82, 2446 (2003).
T. K. Cheng, S. D. Brorson, A. S. Kazeroonian, J. S. Moodera, G. Dresselhaus, M. S. Dresselhaus, and E. P. Ippen, Appl. Phys. Lett. 57, 1004 (1990).
J. M. Chwalek, C. Uher, J. F. Whitaker, G. A. Mourou, and J. A. Agostinelli, Appl. Phys. Lett. 58, 980 (1991).
T. Pfeifer, T. Dekorsy, W. Kutt, and H. Kurz, Appl. Phys. A: Solids Surf. 55, 482 (1992).
X. Liu, Y. Sasaki, and J. K. Furdyna, Appl. Phys. Lett. 79, 2414 (2001).
G. Irmer, M. Wenzel, and J. Monecke, Phys. Rev. B 56, 9524 (1997).
M. J. Seong, S. H. Chun, H. M. Cheong, N. Samarth, and A. Mascarenhas, Phys. Rev. B 66, 33202 (2002).
G. Abstreiter, R. Trommer, M. Cardona, and A. Pinczuk, Solid State Commun. 30, 703 (1979).
K. Wan and J. F. Young, Phys. Rev. B 41, 10773 (1990).
L. L. Chase, D. Kuhner, and W. E. Bron, Phys. Rev. B 7, 3892 (1973).
G. C. Cho, T. Dekorsy, H. J. Bakker, R. Hövel, and H. Kurz, Phys. Rev. Lett. 77, 4062 (1996).
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Yee, K.J., Lim, Y.S., Liu, X. et al. Coherent Optical Phonon Oscillations in GaMnAs. J Supercond 18, 115–119 (2005). https://doi.org/10.1007/s10948-005-2161-9
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DOI: https://doi.org/10.1007/s10948-005-2161-9