Anisotropic muonium centers in aluminum nitride


Bani-Salameh H. N. , ÇELEBİ Y. G. , Cox S. F. J. , Lichti R. L.

PHYSICA B-CONDENSED MATTER, cilt.374, ss.372-375, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 374
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.physb.2005.11.104
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Sayfa Sayıları: ss.372-375

Özet

An atomic-like neutral muonium center with a small anisotropy is inferred from hyperfine decoupling curves and longitudinal relaxation data on AIN. The isotropic contribution of A = 4422 M Hz, 99% of the full vacuum value, is accompanied by a weak dipolar term with D = 144 MHz as average values extracted from complete decoupling curves at a few temperatures. Simulations assuming the four nitrogen antibonding sites well reproduce the decoupling data. The hyperfine constants are consistent with those previously obtained from fitting temperature-dependent longitudinal relaxation rates to a simple model for Mu(0) motion. (c) 2005 Elsevier B.V. All rights reserved.