Hydrogen states in CuInSe2—a μSR study

✍ Scribed by R.C. Vilão; H.V. Alberto; J.M. Gil; J.P. Piroto Duarte; N. Ayres de Campos; A. Weidinger; M.V. Yakushev

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 296 KB
• Volume: 340-342
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2003.09.199

✦ Synopsis

Implanted positive muons, used to mimic protons, are observed to form a diamagnetic state in the chalcopyrite semiconductor CuInSe 2 . A shift of the muon precession frequency is observed at a high transverse magnetic field (1600 G) and is interpreted as being associated to the presence of a transient neutral state. A high charge or spin flip rate of the electron bound to the muon is suggested to be the cause for the absence of a hyperfine splitting, i.e., a direct signature of a neutral state. This observation is consistent with the presence of a hydrogen donor level close to or above the conduction band minimum.