Abstract
The temperature dependence of the shape of the inelastic neutron scattering peak from TA phonons in GaAs heavily doped by Te was studied within the temperature interval from 363 to 253 K. It was shown that doping with tellurium (to a carrier concentration N e ≈ 2 × 1018 cm−3) gives rise to the appearance of an additional contribution to neutron scattering on the high-energy side of the TA phonon resonances at values of the reduced wave vector q < 0.1a*. Below 320 K, the intensity of this additional component rises sharply, and then, below 273 K, the main TA peak and the additional shoulder merge almost completely. This additional scattering is believed to be due to a defect-induced mode, which may be responsible for the observed anomalies in the physical properties in this crystal.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
W. Känzig, H. R. Hart, Jr., and S. Roberts, Phys. Rev. Lett. 13(18), 543 (1964).
U. T. Fiory, Phys. Rev. B 4(2), 614 (1971).
B. E. Vougmeister and M. D. Glinchuk, Rev. Mod. Phys. 62(4), 993 (1990).
V. T. Bublik, M. G. Mil’vidskii, and V. B. Osvenskii, Izv. Vyssh. Uchebn. Zaved. Fiz. 1, 7 (1980).
I. Ya. Buyanova, S. S. Ostapenko, and M. K. Sheinkman, Fiz. Tverd. Tela (Leningrad) 27(3), 748 (1985) [Sov. Phys. Solid State 27 (3), 461 (1985)].
V. V. Prudnikov and I. A. Prudnikova, Kristallografiya 37(5), 1093 (1992) [Sov. Phys. Crystallogr. 37 (5), 585 (1992)].
V. V. Prudnikov and I. A. Prudnikova, Izv. Vyssh. Uchebn. Zaved. Fiz. 9, 105 (1989).
E. A. Balagurova, Yu. B. Grekov, A. F. Kravchenko, I. A. Prudnikova, V. V. Prudnikov, and N. A. Semikolenova, Fiz. Tekh. Poluprovodn. (Leningrad) 19(9), 1566 (1985) [Sov. Phys. Semicond. 19 (9), 963 (1985)].
D. Strauch and B. Dorner, J. Phys.: Condens. Matter 2, 1457 (1990).
Yu. A. Izyumov and N. A. Chernoplekov, Neutron Spectroscopy (Énergoatomizdat, Moscow, 1983) [in Russian].
C. W. Garland and K. C. Park, J. Appl. Phys. 33(2), 759 (1962).
O. Madelung, Introduction to Solid State Theory (Springer, Berlin, 1978; Nauka, Moscow, 1985).
A. A. Maradudin, Theoretical and Experimental Aspects of the Effects of Point Defects and Disorder on the Vibration of Crystals (Academic, New York, 1966).
D. A. Robbie, M. J. L. Sangster, and P. Pavone, Phys. Rev. B 51(16), 10489 (1995).
J. Als-Nielsen, in Proceedings of the Fourth IAEA Symposium on Neutron Inelastic Scattering (Copenhagen, 1968), Vol. 1, p. 35.
P. H. Dederichs, C. Lehmann, and A. Scholz, Phys. Rev. Lett. 31(18), 1130 (1973).
R. F. Wood and M. Mostoller, Phys. Rev. Lett. 35(1), 45 (1975).
R. M. Nicklow, R. R. Coltman, F. W. Young, Jr., and R. F. Wood, Phys. Rev. Lett. 35(21), 1444 (1975).
D. A. Robbie, R. S. Leigh, and M. J. L. Sangster, Phys. Rev. B 56(3), 1381 (1997).
H. Ch. Alt and B. Dischler, Appl. Phys. Lett. 66(1), 61 (1995).
H. Ch. Alt, H. Mussig, and H. Brugger, in Proceedings of the 9th Conference on Semiconducting and Insulating Materials (Tolouse, France, 1996), p. 155.
A. Naberezhnov, S. Vakhrushev, B. Dorner, D. Strauch, and H. Moudden, Eur. Phys. J. B 11(1), 13 (1999).
J. Harada, J. D. Axe, and G. Shirane, Phys. Rev. B 4(1), 155 (1971).
Author information
Authors and Affiliations
Additional information
__________
Translated from Fizika Tverdogo Tela, Vol. 47, No. 6, 2005, pp. 1026–1031.
Original Russian Text Copyright © 2005 by Borisov, Vakhrushev, Naberezhnov, Okuneva.
Rights and permissions
About this article
Cite this article
Borisov, S.A., Vakhrushev, S.B., Naberezhnov, A.A. et al. Inelastic neutron scattering by TA phonons in heavily doped gallium arsenide. Phys. Solid State 47, 1060–1065 (2005). https://doi.org/10.1134/1.1946856
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1946856