Interaction of Acoustic Waves with Donor Spins in Germanium and Silicon

Abstract

A possibility of observing the acoustic donor-spin resonance in germanium and silicon is quantitatively examined on a basis of Hasegawa’s theory of spin-lattice relaxation. If the directions of propagation and polarization of acoustic waves and the direction of static magnetic field are suitably chosen, the attenuation coefficient at resonance in germanium is shown to be sufficiently large for observation. The attenuation coefficient in silicon is much smaller than that in germanium because of smaller coupling constant.