Abstract
Magneto-optical experiments are reported which demonstrate the influence of the structural phase transition in Pb1−xGexTe (x<0.012) on the band structure. Cyclotron resonance has been observed both above and below Tc. Above Tc the band structure is similar to that of PbTe with four equivalent valleys at the L-point in both conduction and valence bands. At Tc a rhombohedral phase transition occurs and the valleys are split into a singly degenerate (T) valley and three equivalent (L) valleys. The effective masses and relative band-edge energies for the different types of valley are deduced.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. T. Bate, D. L. Carter and J. S. Wrobel, Proc. Int. Conf. Phys. Semiconductors, 125 (1970).
S. Takaoka and K. Murase, Phys. Rev.B20, 2823 (1979).
H. Kawamura, S. Nishikawa and K. Murase, Proc. Conf. High Magnetic Fields, Oxford, 1978, p. 170.
A. Lopez-Otero, Appl. Phys. Lett.26, 470 (1975).
E. M. Gershenzon, Yu. A. Gurvich and N. A. Sarebryakova, Sov. Phys. Sol. State12, 1841 (1971).
J. C. Ramage, F. Kuchar, R. A. Stradling and A. Lopez-Otero, J. Phys. C10, 5089 (1977).
J. R. Burke and G. P. Carver, Phys. Rev.B17, 2719 (1978).
H. Schaber and R. E. Doezema, Sol. State Comm.31, 197 (1979).
R. Grisar, H. Burkhard, G. Bauer and W. Zawadski, Phys. Narrow Gap Semiconductors, Warsaw, 115 (1977).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lewis, A.V., Bauer, G., Nicholas, R.J. et al. The band structure of Pb1−x Ge x Te above and below the structural phase transition. Int J Infrared Milli Waves 1, 485–499 (1980). https://doi.org/10.1007/BF01007328
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01007328