Tunnelling between excited 4T2 and 2E states of Cr3+ ions with small energy separation-the case of GSGG

M Yamaga; B Henderson; K P O'Donnell

doi:10.1088/0953-8984/1/46/010

Tunnelling between excited ⁴T₂ and ²E states of Cr³⁺ ions with small energy separation-the case of GSGG

M Yamaga, B Henderson, K P O'Donnell

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47 Citations (Scopus)

Abstract

A model of ²E to ⁴T₂ tunnelling induced by zero-point vibrations is developed to account for the observed temperature dependence in the photoluminescence spectrum of Cr³⁺ ions in crystals with small energy separation Delta E=E(²E)-E(⁴T ₂). The model gives good agreement with experimental results for Cr³⁺ -doped Gd₃Sc₂Ga₃O₁₂, where Delta E=70 cm^-1 is smaller than the mean phonon energy h(cross) omega approximately=180 cm^-1.

Original language	English
Pages (from-to)	9175-9182
Number of pages	8
Journal	Journal of Physics: Condensed Matter
Volume	1
Issue number	46
DOIs	https://doi.org/10.1088/0953-8984/1/46/010
Publication status	Published - 20 Nov 1989

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Keywords

photoluminescence
crystals
small energy separation

Cite this

Yamaga, M., Henderson, B., & O'Donnell, K. P. (1989). Tunnelling between excited ⁴T₂ and ²E states of Cr³⁺ ions with small energy separation-the case of GSGG. Journal of Physics: Condensed Matter , 1(46), 9175-9182. https://doi.org/10.1088/0953-8984/1/46/010

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AB - A model of 2E to 4T2 tunnelling induced by zero-point vibrations is developed to account for the observed temperature dependence in the photoluminescence spectrum of Cr3+ ions in crystals with small energy separation Delta E=E(2E)-E(4T 2). The model gives good agreement with experimental results for Cr3+ -doped Gd3Sc2Ga3O12, where Delta E=70 cm-1 is smaller than the mean phonon energy h(cross) omega approximately=180 cm-1.

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10.1088/0953-8984/1/46/010