Diffusion and trapping of positively charged muonium in InAs

✍ Scribed by R.L. Lichti; J.E. Vernon; B.R. Carroll; Y.G. Celebi; P.J.C. King; S.F.J. Cox

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 163 KB
• Volume: 401-402
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.09.038

✦ Synopsis

Muon spin precession in weak transverse magnetic fields and zero-field muon spin depolarization data are used to characterize the Mu þ states in p-type InAs. A low-temperature signal, assigned to the BC site, shows the onset of motion just above 150 K. Above 250 K, the Mu þ diffusion proceeds via a different primary site, assigned to the T V interstitial location as claimed for other III-V materials. The zero-field data indicate that Mu þ at T As remains stationary up to 200 K. A third signal dominates at intermediate temperatures and shows a sharp peak in depolarization rate near 170 K, typical of cyclic dynamics, perhaps from bi-directional Mu þ site transfers.