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Magnetic-field effects on the absorption bands of KBr:Tl and KBr:In

Влияние магнитного поля на зоны поглощения KBr:Tl и KBr:In

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Il Nuovo Cimento B (1971-1996)

Summary

We report the measurements of the magnetically induced circular dichroism in the optical absorption bands of Tl+- and In+-doped potassium bromide crystals performed to test the validity of Cho's theory based on the Jahn-Teller effect. A qualitative analysis of the dichroic signal is given in terms of the changes of the moments of the shape function simultaneously utilizing the theoretical dichroic spectra to determine theg-factors and the electron-lattice coupling coefficients of the centre.

Riassunto

Si riportano gli spettri di dicroismo circolare magnetico delle bande di assorbimentoA, B eC del KBr:Tl e del KBr:In. L'analisi dei risultati sperimentali, mediante il metodo dei momenti riformulato da Honma, ha permesso di determinare i fattorig efficaci delle bande e le costanti di accoppiamento elettrone-reticolo. La somiglianza esistente tra i profili delle curve dicroiche calcolate e quelle sperimentali qui riportate confermano la teoria basata sugli effetti dell'integrazione di Jahn-Teller recentemente proposta da Cho.

Резюме

Сообщаются результаты измерений кругового дихроизма, индуцированного магнитным полем, в зонах оптического поглощения в кристаллах бромистого калия с присадками Tl+ и In+, которые были выполнены для проверки справедливости теории Шо, основанной на эффекте Яна-Теллера. Количественный анализ дихроического сигнала проводится в терминах изменений моментов функции конфигурации, одновременно используя теоретические дихроические спектры для определенияg-факторов и коэффициентов электрон-решеточной связи центра.

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Authors and Affiliations

  1. Istituto di Fisica dell'Università, Messina

    C. Bagnato, V. Grasso, P. Perillo & G. Vermiglio

  2. Gruppo Nazionale di Struttura della Materia del C.N.R., Messina

    C. Bagnato, V. Grasso, P. Perillo & G. Vermiglio

Authors
  1. C. Bagnato
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  2. V. Grasso
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  3. P. Perillo
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  4. G. Vermiglio
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Bagnato, C., Grasso, V., Perillo, P. et al. Magnetic-field effects on the absorption bands of KBr:Tl and KBr:In. Nuov Cim B 26, 263–271 (1975). https://doi.org/10.1007/BF02755553

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  • DOI: https://doi.org/10.1007/BF02755553

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