منابع مشابه
DX centers in AlAs and GaAs-AlAs selectively doped superlattices
Dx centers have been investigated using deep level transient
متن کاملLocalized vibrational modes in GaN:O tracing the formation of oxygen DX-like centers under hydrostatic pressure
Vibrational modes are observed at ambient pressure in O-doped GaN at 544 cm using Raman spectroscopy. Investigation of these modes with applied hydrostatic pressure reveals the existence of three closely spaced modes that shift in relative intensity with increasing pressure. Notably, transitions between the different modes occur at previously observed electronic transitions associated with the ...
متن کاملCorrelation of vibrational modes and DX-like centers in GaN :O
Vibrational modes in O-doped GaN have been observed at 544 cm~1 in Raman spectroscopy. Under perturbation of large hydrostatic pressure the mode appears as a set of three di!erent lines Q 123 whose relative intensities change by pressure. A switching between the modes occurs near 10 and 20 GPa and is found to correlate with the electron capture process to the DX-like state of O. We employ a sim...
متن کاملDX-centers in CdTe and ZnTe observed by locally sensitive probe atoms
Heavily In-doped CdTe and ZnTe crystals are investigated using perturbed γγ-angular correlation experiments. By means of characteristic electric field gradients, it is shown that in the Cd (Zn) poor regime, the compensation is governed by A-center formation. After annealing in Cd (Zn) rich atmosphere, the formation of DX-centers is observed and identified as the prevailing compensation mechanis...
متن کاملAja150021 354..359
Purpose: There currently is no guideline regarding amplification or verification for children with aural atresia. This population, with the absence of the ear canal, has obvious congenital hearing loss. Research suggests that delayed treatment for hearing loss can result in speech and language impairments, including poor performance in school. In this study we examined the relationship between ...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1993
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.84.765