ELECTRON-NUCLEAR DOUBLE-RESONANCE OF DEEP-BORON ACCEPTORS IN SILICON-CARBIDE

Electron-nuclear double resonance spectra of deep-boron accepters in s ilicon carbide have been observed. The quadrupole and hyperfine intera ction constants are determined. A sharp decrease of the quadrupole int eraction and suppression of the anisotropic part of the hyperfine inte raction, as compared with shallow-boron accepters, are found, The obse rved effects are explained by the motion of holes inside the deep-boro n acceptor. (C) 1996 American Institute of Physics.