Muonium (hydrogen) defect centers in indium nitride


Celebi Y., Cox S., Davis E., Lichti R.

PHYSICA B-CONDENSED MATTER, cilt.340, ss.385-388, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 340
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/j.physb.2003.09.061
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Sayfa Sayıları: ss.385-388

Özet

Recent muon spin-precession experiments confirmed that muonium, a light hydrogen isotope, forms a shallow donor in InN. Depolarization measurements in zero-magnetic field are in agreement and show more than one positively charged center. Below 350 K, one Mu(+) signal has a depolarization function typical of a static center, while a second relaxes more weakly with the characteristics of slow tunneling motion. In combination, spin precession and zero-field data show conclusively that the shallow Mu(0) ionizes to the Mu(+) ground state. The static signal converts to that for the mobile state in two steps, suggesting two metastable Mu(+) trap sites. Preliminary energies are extracted for the detrapping transitions and thermally activated Mu(+) diffusion. (C) 2003 Elsevier B.V. All rights reserved.