Electron spin echo relaxation and envelope modulation of phosphorus shallow donors in silicon

Details Electron spin echo relaxation and envelope modulation of phosphorus shallow donors in silicon Electron spin echo relaxation and envelope modulation of phosphorus shallow donors in silicon

2005-10-19

arxiv.org/abs/cond-mat/0510497v1

Physics

Condensed Matter

Materials Science

13 pages, 4 figures, 3 tables; to be published in Physical Review B

Scientific paper

Spins of single donor atoms are attractive candidates for large scale quantum information processing in silicon, since quantum computation can be realized through the manipulation of electron and/or nuclear spins. We here report on two-pulse electron spin echo experiments on phosphorus shallow donors in natural and 28Si-enriched silicon epilayers doped with 10^16 cm-3 P donors. The experiments address the spin-spin relaxation times and mechanisms and provide, through the electron spin echo envelope modulation (ESEEM) effect, information on the donor electron wave function. Experiments performed as a function of the pulse turning angle allowed us to measure the exponential relaxation and spectral diffusion times depurated by instantaneous diffusion. According to these results, isotopically purified samples are necessary to reduce the spectral diffusion contribution and the P shallow donors concentration plays a fundamental role in determining the intrinsic phase memory time. ESEEM peaks have been assigned to hyperfine-coupled silicon-29 nuclei at specific crystallographic positions on the basis of a spectral fit procedure including instrumental distortions.

Affiliated with

Also associated with

No associations

Rating

Electron spin echo relaxation and envelope modulation of phosphorus shallow donors in silicon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electron spin echo relaxation and envelope modulation of phosphorus shallow donors in silicon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron spin echo relaxation and envelope modulation of phosphorus shallow donors in silicon will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-242486