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




TekijätJ. 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

KustantajaAmerican Physical Society

Julkaisuvuosi2015

JournalPhysical Review B

Tietokannassa oleva lehden nimiPHYSICAL REVIEW B

Lehden akronyymiPHYS REV B

Artikkelin numero121202

Vuosikerta92

Numero12-15 September

Sivujen määrä4

ISSN1098-0121

eISSN1550-235X

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


Tiivistelmä

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.




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