Abstract
The experimental and theoretical results of studies of optical absorption in doped Ge/Si quantumdot structures in the far-infrared region, corresponding to the energies of transitions of holes from the ground state to the lowest excited size-quantization state, are reported. An analytical theory of the size quantization of holes in a lens-shaped quantum dot is developed in the context of the adiabatic approximation with consideration for pair Coulomb interaction. It is shown that the interaction has no effect on the frequencies of lower interlevel resonances. This fact is representative of generalized Kohn’s theorem satisfied due to the specific geometric shape of the quantum dot. The experimental and theoretical values of the transition energies are in good agreement.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. N. Lobanov, A. V. Novikov, K. E. Kudryavtsev, A.N. Yablonskiy, A. V. Antonov, Yu. N. Drozdov, D.V. Shengurov, V. B. Shmagin, Z. F. Krasilnik, N. D. Zakharov, and P. Werner, Physica E 41, 935 (2009).
Z. F. Krasilnik, A. V. Novikov, D. N. Lobanov, K. E. Kudryavtsev, A. V. Antonov, S. V. Obolenskiy, N. D. Zakharov, and P. Werner, Semicond. Sci. Technol. 26, 014029 (2011).
M. Grydlik, F. Hackl, H. Groiss, M. Glaser, A. Halilovic, T. Fromherz, W. Jantsch, F. Schaffler, and M. Brehm, ACS Photon. 3, 298 (2016).
A. I. Yakimov, V. V. Kirienko, V. A. Armbrister, A. A. Bloshkin, and A. V. Dvurechenskii, Appl. Phys. Lett. 107, 213502 (2015).
A. I. Yakimov, V. V. Kirienko, A. A. Bloshkin, V. A. Armbrister, P. A. Kuchinskaya, and A. V. Dvurechenskii, Appl. Phys. Lett. 106, 032104 (2015).
M. El Kurdi, S. Sauvage, G. Fishman, and P. Boucaud, Phys. Rev. B 73, 195327 (2006).
A. Tonkikh, N. Zakharov, V. Talalaev, and P. Werner, Phys. Status Solidi RRL 4, 224 (2010).
A. Tonkikh and P. Werner, Phys. Status Solidi B 250, 1795 (2013).
A. Tonkikh, N. Zakharov, E. Pippel, and P. Werner, Thin Solid Films 519, 3669 (2011).
A. N. Sofronov, L. E. Vorobjev, D. A. Firsov, R. M. Balagula, and A. A. Tonkikh, Superlatt. Microstruct. 107, 228 (2017).
A. O. Govorov and A. V. Chaplik, JETP Lett. 52, 31 (1990).
P. A. Maksym and T. Chakraborty, Phys. Rev. Lett. 65, 108 (1990).
F. M. Peeters, Phys. Rev. B 42, 1486 (1990).
W. Kohn, Phys. Rev. 123, 1242 (1961).
D. B. Hayrapetyan, E. M. Kazaryan, and H. A. Sarkisyan, J. Contemp. Phys. 48, 32 (2013).
D. B. Hayrapetyan, E. M. Kazaryan, and H. A. Sarkisyan, Physica E 75, 353 (2016).
V. M. Galitskii, B. M. Karnakov, and V. I. Kogan, Problems in Quantum Mechanics (Nauka, Moscow, 1992), Chap. 8, p. 96 [in Russian].
L. S. Petrosyan, Proc. Natl. Acad. Sci. Rep. Armen.— Phys. 40, 265 (2005).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.N. Sofronov, R.M. Balagula, D.A. Firsov, L.E. Vorobjev, A.A. Tonkikh, H.A. Sarkisyan, D.B. Hayrapetyan, L.S. Petrosyan, E.M. Kazaryan, 2018, published in Fizika i Tekhnika Poluprovodnikov, 2018, Vol. 52, No. 1, pp. 63–67.
Rights and permissions
About this article
Cite this article
Sofronov, A.N., Balagula, R.M., Firsov, D.A. et al. Absorption of Far-Infrared Radiation in Ge/Si Quantum Dots. Semiconductors 52, 59–63 (2018). https://doi.org/10.1134/S1063782618010220
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063782618010220