Abstract
We have used luminescence spectroscopy to establish the effect of low-temperature (100 K) elastic uniaxial strain on the configuration of a self-localized exciton (SLE) in alkali halide crystals (AHCs) at the instant of radiative relaxation. In face-centered (fc) alkali halide crystals, redistribution of the luminescence intensity occurs from the asymmetric SLE configuration to the symmetric SLE configuration (type III → II → I), while conversely in body-centered (bc) alkali halide crystals the redistribution occurs in favor of the asymmetric (polarized) SLE configuration (type I → II). External strain along the 〈100〉 direction leads to effective slip of the anions in the alkali halide crystals along the 〈110〉 direction, coinciding with the direction of compression of the SLE, which promotes creation of preferentially the symmetric SLE configuration, while strain along the 〈110〉 direction, acting perpendicularly to the length of the SLE, leads to elongation of the SLE, which promotes creation of the asymmetric SLE configuration with a higher degree of polarization.
Similar content being viewed by others
References
K. Kan’no, K. Tanaka, and T. Hayashi, Rev. Solid State Sci., 4, No. 2–3, 383–401 (1990).
A. A. Kaplyanskii, Opt. i Spektr., 41, 602–614 (1964).
E. Vasilchenko, E. Sarmukhanov, K. Shunkeev, and A. Elango, Phys. Status Solidi (b), 174, 155–163 (1992).
V. Babin, A. Elango, K. Kalder, A. Maaroos, K. Shunkeev, E. Vasilchenko, and S. Zazubovich, J. Lumin, 81, 71–77 (1999).
V. Babin, A. Bekeshev, A. Elango, K. Kalder, A. Maaroos, K. Shunkeev, E. Vasilchenko, and S. Zazubovich, J. Phys.: Condens. Matter, 11, 2303–2317 (1999).
V. Babin, A. Bekeshev, A. Elango, K. Kalder, K. Shunkeev, E. Vasilchenko, and S. Zazubovich, J. Lumin., 76–77, 502–506 (1988).
A. Elango, Sh. Sagimbaeva, E. Sarmukhanov, T. Savikhina, and K. Shunkeev, Radiat. Measur., 33, 823–827 (2001).
Ch. B. Lushchik and A. Ch. Lushchik, Decay of Electronic Excitations with Formation of Defects in Solids [in Russian], Nauka, Moscow (1989).
K. S. Song and R. T. Williams, in: M. Cordona et al., Self-Trapped Excitons, Springer, Berlin (1993).
B. I. Smirnov, Dislocation Structure and Strengthening of Crystals [in Russian], Nauka, Leningrad (1981).
V. L. Indenbom and A. N. Orlov, Usp. Fiz. Nauk, 3, 557–591 (1962).
K. Sh. Shunkeev, E. T. Sarmukhanov, A. Z. Bekeshev, and Sh. Zh. Sagimbaeva, in: Abstracts, 23rd International Conference on Low Temperature Physics, 20–27 August 2002, Hiroshima, Japan (2002); 26EP7.
K. Sh. Shunkeev, E. T. Sarmukhanov, A. Z. Bekeshev, S. K. Tulepbergenov, and Sh. Zh. Sagimbaeva, Vestn. KazNU. Ser. Fiz., No. 2(17), 48–63 (2004).
K. Shunkeyev, E. Sarmukhanov, A. Barmina, L. Myasnikova, and S. Shunkeyev, in: Abstracts, 24th International Conference on Low Temperature Physics, 10–17 August 2005, Orlando, Florida USA (2005).
A. Akasaka and S. Masunaga, J. Phys. Soc. Jpn., 70, 582–584 (2001).
L. A. Lisitsyna, V. I. Korepanov, and V. M. Lisitsyn, Fiz. Tverd. Tela, 44, 2135–2138 (2002).
Author information
Authors and Affiliations
Corresponding author
Additional information
__________
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 74, No. 1, pp. 67–72, January–February, 2007.
Rights and permissions
About this article
Cite this article
Shunkeev, K.S., Sarmukhanov, E.T., Barmina, A.A. et al. Effect of uniaxial strain on the structure of self-localized excitons in alkali halide crystals. J Appl Spectrosc 74, 74–80 (2007). https://doi.org/10.1007/s10812-007-0011-1
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/s10812-007-0011-1