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. Author manuscript; available in PMC: 2012 Oct 16.

Published in final edited form as: Phys Rev B Condens Matter Mater Phys. 2012 Sep 21;86(10):104428. doi: 10.1103/PhysRevB.86.104428

FIG. 2 — (color online) Suppression of Bi-²⁹Si spin-bath decoherence for the |12 → |9 EPR transition. (a) Simulated ENDOR and nuclear spin diffusion coherence times T_SD as a function of magnetic field B, showing collapse of the superhyperfine couplings and a sharp increase in T_SD as the field approaches the B = 188.0 mT optimal working point (OWP). The dashed line is a fit. (b) Simulated ENDOR at the B = 188.0 mT OWP (upper panel) and experimental spectrum at 9.755 GHz (lower panel). (c) Calculated donor Hahn spin echo decays from which coherence times in Fig. 2(a) were extracted.

Inline graphic — (color online) Suppression of Bi-²⁹Si spin-bath decoherence for the |12 → |9 EPR transition. (a) Simulated ENDOR and nuclear spin diffusion coherence times T_SD as a function of magnetic field B, showing collapse of the superhyperfine couplings and a sharp increase in T_SD as the field approaches the B = 188.0 mT optimal working point (OWP). The dashed line is a fit. (b) Simulated ENDOR at the B = 188.0 mT OWP (upper panel) and experimental spectrum at 9.755 GHz (lower panel). (c) Calculated donor Hahn spin echo decays from which coherence times in Fig. 2(a) were extracted.