Paramagnetic-Resonance Studies of S, Se, and Te Donor Impurities in GaP

Abstract

Resonances of electrons at neutral S, Se, and Te donors have been observed in GaP at 77\ifmmode^\circ\else\textdegree\fi{}K. Within experimental error, the $g$ values of the resonances are all in the range 1.9976\ifmmode\pm\else\textpm\fi{}0.0008. Each resonance consisted of a single broad line, 45 to 60 G wide and Lorentzian in shape. The results are discussed in terms of the effective-mass theory of Kohn and Luttinger.