Abstract
We report Stark shift measurements for donor electron spins in silicon using pulsed electron spin resonance. Interdigitated metal gates on a Sb-implanted epilayer are used to apply the electric fields. Two quadratic Stark effects are resolved: a decrease of the hyperfine coupling between electron and nuclear spins of the donor and a decrease in electron Zeeman factor. The hyperfine term prevails at magnetic fields of 0.35 T, while the factor term is expected to dominate at higher magnetic fields. We discuss the results in the context of the Kane model quantum computer.
- Received 23 March 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.176404
©2006 American Physical Society