The positron annihilation method was used in a determination of the momentum distribution of the valence electrons of silicon impurities in gallium arsenide and in Al//xGa//1// minus //xAs solid solutions. The impurity atoms were in singly and doubly ionized states in the GaAs lattice. Positronium states were observed near structure defects in Al//xGa//1// minus //xAs:Si solid solutions.
|Title of host publication||Sov Phys Semicond|
|Number of pages||3|
|Publication status||Published - Aug 1977|
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