Optical and magnetic properties of (Ga1-xMnx)N-based heterostructures

H. C. Jeon, T. W. Kang, T. W. Kim

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Abstract

The optical and the magnetic properties of (Ga1-xMn x)N/GaN digital ferromagnetic heterostructures (DFHs) grown by using molecular beam epitaxy were investigated. The photoluminescence (PL) spectra showed band-edge exciton and exciton transitions between the conduction band and the Mn acceptor, indicative of the Mn atoms acting as substitutes, which corresponded to neutral donor-bound exciton for the GaMnN and GaN. The magnetization curves as functions of the magnetic field at 5 K indicated that the saturation magnetic moment in the (Ga1-xMnx)N/GaN DFHs decreased with increasing Mn mole fraction. The ferromagnetic properties of GaMnN/GaN DFHs were significantly affected by the hole concentration in the DFHs.

Original languageEnglish
Pages (from-to)989-991
Number of pages3
JournalJournal of the Korean Physical Society
Volume49
Issue number3
StatePublished - Sep 2006

Keywords

  • (GaMn)N/GaN-based heterostructures
  • Magnetic properties
  • Optical properties

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