Abstract
Intrinsic recombination luminescence which originates in triplet states of the self trapped exciton in alkali halide crystals has been investigated experimentally and theoretically with regard to effects of applied magnetic fields. Lifetimes and circular polarizations are observed to vary anisotropically with field, and a level crossing resonance is identified in CsI and, tentatively, in CsBr. This provides evaluation of the zero-field splitting for the triplet state. Splittings and lifetimes for CsI and KI are compared with a theory based on a Vk-like hole and nonequilibrium level populations, and reasonable agreement is obtained. Electronic exchange energies which occur as parameters in the theory are in rough agreement with independent estimates.
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References
M. N. Kabler and D. A. Patterson, Phys. Rev. Letters 19, 652 (1967).
M. J. Marrone and M. N. Kabler, Phys. Rev. Letters 27, 1283 (1971).
R. G. Fuller, R. T. Williams, and M. N. Kabler, Phys. Rev. Letters 25,446 (1970).
W. B. Fowler, M. J. Marrone, and M. N. Kabler, to be published.
The Hamiltonian matrix reduces to four 3x3 matrices in the absence of an applied field.
D. Schoemaker, private communication.
Y. Petroff, R. Pinchaux, C. Chekroun, M. Balkanski, and H. Kamimura, Phys. Rev. Letters 27,1377 (1971).
D. Fröhlich, U. U. Fischbach, and M. N. Kabler, J. Luminescence, to be published.
H. Lamatsch, J. Rossel, and E. Saurer, Phys. Stat. Sol (B) 48 311 (1971).
As for KI, there is also a fast component (τ≈1μsec) in the 3.65eV CsI band due to the initial depopulation of the Eu levels. Its lifetime does not appear to vary strongly with H, and it will not be discussed here.
The transition probability is proportional to E2n, where E is the field dependent level splitting. The factor E2 comes from the phonon density of states. The field dependent lifetimes of the Eu states must also he taken into account.
R. S. Knox, Phys. Rev. 110,375 (1958).
Y. Onodera and Y. Toyozawa, J. Phys. Soc. Japan 22,833 (1967).
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© 1973 Plenum Press, New York
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Kabler, M.N., Marrone, M.J., Fowler, W.B. (1973). Magneto-Optic Effects in Recombination Luminescence from Self Trapped Excitons. In: Williams, F., Baron, B., Martens, M., Varma, S.P. (eds) Luminescence of Crystals, Molecules, and Solutions. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2043-2_21
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DOI: https://doi.org/10.1007/978-1-4684-2043-2_21
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