Microscopic control of Si-29 nuclear spins near phosphorus donors in silicon




J. Järvinen, D. Zvezdov, J. Ahokas, S. Sheludyakov, O. Vainio, L. Lehtonen, S. Vasiliev, Y. Fujii, S. Mitsudo, T. Mizusaki, M. Gwak, SangGap Lee, Soonchil Lee, L. Vlasenko

PublisherAmerican Physical Society

2015

Physical Review B

PHYSICAL REVIEW B

PHYS REV B

121202

92

12-15 September

4

1098-0121

1550-235X

DOIhttps://doi.org/10.1103/PhysRevB.92.121202



We demonstrate an efficient control of Si-29 nuclear spins for specific lattice sites near P-31 donors in silicon at temperatures below 1 K and in a high magnetic field of 4.6 T. Excitation of the forbidden electron-nuclear transitions leads to a pattern of well-resolved holes and peaks in the electron spin resonance (ESR) lines of P-31. The pattern originates from dynamic polarization (DNP) of the Si-29 nuclear spins near the donors via the solid effect. DNP of Si-29 is demonstrated also with the Overhauser effect where the allowed ESR transitions are excited. In this case mostly the remote Si-29 nuclei having weak interaction with the donors are polarized, which results in a single hole and a sharp peak pair in the ESR spectrum. Our work shows that the solid effect can be used for initialization of Si-29 nuclear spin qubits near the donors.




Last updated on 2024-26-11 at 22:13