236 research outputs found
Line Broadening and Decoherence of Electron Spins in Phosphorus-Doped Silicon Due to Environmental 29^Si Nuclear Spins
Phosphorus-doped silicon single crystals with 0.19 % <= f <= 99.2 %, where f
is the concentration of 29^Si isotopes, are measured at 8 K using a pulsed
electron spin resonance technique, thereby the effect of environmental 29^Si
nuclear spins on the donor electron spin is systematically studied. The
linewidth as a function of f shows a good agreement with theoretical analysis.
We also report the phase memory time T_M of the donor electron spin dependent
on both f and the crystal axis relative to the external magnetic field.Comment: 5 pages, 4 figure
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