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Title: Zeeman spectroscopy of the internal transition {sup 4}T{sub 1} to {sup 6}A{sub 1} of Fe{sup 3+} ions in wurtzite GaN

Internal transitions of Fe{sup 3+} ions in wurtzite gallium nitride were analyzed by means of photoluminescence, Zeeman, and transmission spectroscopy in order to investigate the fine structure. Magnetic fields up to 14 T were applied perpendicular or parallel to the crystal c-axis, causing a characteristic splitting pattern of the luminescence related to the transition from the {sup 4}T{sub 1} excited state to the {sup 6}A{sub 1} ground state of Fe{sup 3+}. The complete Hamiltonian matrix is constructed taking into account the crystal field in cubic and trigonal symmetry, spin-orbit interaction, and the influence of external magnetic fields. Numerical solution yields the exact energy level scheme of the excited state {sup 4}G of Fe{sup 3+} ions in GaN, which partly revises assumptions based on a qualitative treatment considering group theory only and invoking the influence of a Jahn-Teller effect. The coincidence of the calculated energy levels with the experimental data verifies the derived fine structure of the 3d metal ion.
Authors:
; ;  [1] ; ; ;  [2] ;  [3]
  1. Institute of Quantum Matter/Semiconductor Physics Group, University of Ulm, Albert-Einstein-Allee 45, 89069 Ulm (Germany)
  2. Institute of Optoelectronics, University of Ulm, Albert-Einstein-Allee 45, 89069 Ulm (Germany)
  3. Institut für Experimentelle Physik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg (Germany)
Publication Date:
OSTI Identifier:
22493014
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTAL FIELD; CRYSTALS; CUBIC LATTICES; EXCITED STATES; EXPERIMENTAL DATA; FINE STRUCTURE; GALLIUM NITRIDES; GROUND STATES; GROUP THEORY; HAMILTONIANS; IRON IONS; JAHN-TELLER EFFECT; L-S COUPLING; MAGNETIC FIELDS; NUMERICAL SOLUTION; PHOTOLUMINESCENCE; SPECTROSCOPY; TRIGONAL LATTICES; ZEEMAN EFFECT