Host isotope mass effects on the hyperfine interaction of group-V donors in silicon

Abstract

The effects of host isotope mass on the hyperfine interaction of group-V donors in silicon are revealed by pulsed electron nuclear double resonance (ENDOR) spectroscopy of isotopically engineered Si single crystals. Each of the hyperfine-split P-31, As-75, Sb-121, Sb-123, and Bi-209 ENDOR lines splits further into multiple components, whose relative intensities accurately match the statistical likelihood of the nine possible average Si masses in the four nearest-neighbor sites due to random occupation by the three stable isotopes Si-28, Si-29, and Si-30. Further investigation with P-31 donors shows that the resolved ENDOR components shift linearly with the bulk-averaged Si mass.

arXiv comment5 pages, 4 figures, 1 table

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Cited by in corpus (4)

• First-principles hyperfine tensors for electrons and holes in GaAs and silicon
• ${}^{29}$Si nuclear spins as a resource for donor spin qubits in silicon
• Spin resonance linewidths of bismuth donors in silicon coupled to planar microresonators
• NMR study of optically hyperpolarized phosphorus donor nuclei in silicon