### Abstract

A model of ^{2}E to ^{4}T_{2} tunnelling induced by zero-point vibrations is developed to account for the observed temperature dependence in the photoluminescence spectrum of Cr^{3+} ions in crystals with small energy separation Delta E=E(^{2}E)-E(^{4}T _{2}). The model gives good agreement with experimental results for Cr^{3+} -doped Gd_{3}Sc_{2}Ga_{3}O_{12}, where Delta E=70 cm^{-1} is smaller than the mean phonon energy h(cross) omega approximately=180 cm^{-1}.

Language | English |
---|---|

Pages | 9175-9182 |

Number of pages | 8 |

Journal | Journal of Physics: Condensed Matter |

Volume | 1 |

Issue number | 46 |

DOIs | |

Publication status | Published - 20 Nov 1989 |

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### Keywords

- photoluminescence
- crystals
- small energy separation

### Cite this

^{4}T

_{2}and

^{2}E states of Cr

^{3+}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

}

^{4}T

_{2}and

^{2}E states of Cr

^{3+}ions with small energy separation-the case of GSGG'

*Journal of Physics: Condensed Matter*, vol. 1, no. 46, pp. 9175-9182. https://doi.org/10.1088/0953-8984/1/46/010

**Tunnelling between excited ^{4}T_{2} and ^{2}E states of Cr^{3+} ions with small energy separation-the case of GSGG.** / Yamaga, M; Henderson, B; O'Donnell, K P.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Tunnelling between excited 4T2 and 2E states of Cr3+ ions with small energy separation-the case of GSGG

AU - Yamaga, M

AU - Henderson, B

AU - O'Donnell, K P

PY - 1989/11/20

Y1 - 1989/11/20

N2 - 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.

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.

KW - photoluminescence

KW - crystals

KW - small energy separation

UR - http://www.scopus.com/inward/record.url?scp=36149035419&partnerID=8YFLogxK

UR - http://iopscience.iop.org/journal/0953-8984

U2 - 10.1088/0953-8984/1/46/010

DO - 10.1088/0953-8984/1/46/010

M3 - Article

VL - 1

SP - 9175

EP - 9182

JO - Journal of Physics: Condensed Matter

T2 - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 46

ER -

^{4}T

_{2}and

^{2}E states of Cr

^{3+}ions with small energy separation-the case of GSGG. Journal of Physics: Condensed Matter . 1989 Nov 20;1(46):9175-9182. https://doi.org/10.1088/0953-8984/1/46/010