Deformation Defects Supporting Quantum Readout of 29Si Nuclear Spins in Si: P Deformed Crystals

High temperature (950 degrees C) plastic deformation of the Si-29 enriched silicon crystals generates (similar to)10(15) cm(-3) paramagnetic defects of the new type. The multiline spectrum of electron paramagnetic resonance (EPR) of the defects corresponds to S = 1 electronic spin of the clusters containing oxygen. Strong anisotropy and large linewidth of the EPR spectra ((similar to)1 kOe) were observed. The Pake doublet split by spin-spin nuclear dipole interaction was analyzed in the nuclear magnetic resonance (NMR) spectra of the crystals. Contribution of the electron-nuclear interaction to the EPR linewidth is negligibly small, while the NMR linewidth is controlled by the dipole-dipole nuclear relaxation.