Zeeman spectroscopy of the Fe3+ center in GaN

6 November 1995

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 67 (19) , 2822-2824
https://doi.org/10.1063/1.114796

Abstract

We report an optical investigation of the Zeeman behavior of the deep iron acceptor in GaN grown on 6H–SiC. The characteristic ground state splitting of the near‐infrared luminescence transition at 1.2988 eV allows for an unambiguous assignment to Fe³⁺previously proposed on the basis of ODMR results. The observed luminescence lifetime of 8 ms as well as the fine structure of the excited state are consistent with a ⁴T₁(G)–⁶A₁(S) transition. The ⁴T₁(G) state is found to couple only weakly to ε‐type phonon modes.

Keywords

CONTAMINATION
ENERGY−LEVEL SPLITTING
GALLIUM NITRIDES
IMPURITY STATES
IRON ADDITIONS
LOCALIZED STATES
PHOTOLUMINESCENCE
ZEEMAN EFFECT

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