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Metastable thermal donor states in germanium: Identification by electron paramagnetic resonance
Phys. Rev. B 42, 9802 – Published 1 December, 1990
DOI: https://doi.org/10.1103/PhysRevB.42.9802
Abstract
One of the electron paramagnetic resonance (EPR) spectra related to thermal donors in germanium (‘‘spectrum 1’’) has been studied in detail. The mutual identification of spectrum 1 and the F series of far-infrared (ir) donor energy levels has been established following observation of the effect of 100% bistability of that particular thermal-donor species. To our knowledge this is the first time that the bistability of the thermal-donor center has been observed in EPR. It has been further established that for the full description of spectrum 1 a higher spin value S=1 was necessary and the spin Hamiltonian had to be supplemented with an unusual higher-order term of the form .
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