Electron spin coherence of phosphorus donors in silicon: Effect of environmental nuclei

Eisuke Abe, Alexei M. Tyryshkin, Shinichi Tojo, John J.L. Morton, Wayne M. Witzel, Akira Fujimoto, Joel W. Ager, Eugene E. Haller, Junichi Isoya, Stephen A. Lyon, Mike L.W. Thewalt, Kohei M. Itoh

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


We report electron paramagnetic resonance (EPR) experiments of phosphorus donors in isotopically controlled silicon single crystals. By varying the concentration of the 29Si isotope, f, from 0.075% to 99.2%, we systematically study the effect of the environmental nuclear spins on the donor-electron spin. We find excellent agreement between experiment and theory for decoherence times due to nuclear-induced spectral diffusion, clarifying that the nuclear-induced decoherence is dominant in the range of f studied. We also observe that the EPR linewidth shows a transition from the square-root dependence to the linear dependence on f, in agreement with theoretical predictions.

Original languageEnglish (US)
Article number121201
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number12
StatePublished - Sep 2 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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