Hydrogen states in CuInSe2—a μSR study

Autor: M. V. Yakushev, N. Ayres de Campos, R. C. Vilão, João Gil, Alois Weidinger, H. V. Alberto, J. Piroto Duarte
Rok vydání: 2003
Předmět:
Zdroj: Physica B: Condensed Matter. :965-968
ISSN: 0921-4526
Popis: Implanted positive muons, used to mimic protons, are observed to form a diamagnetic state in the chalcopyrite semiconductor CuInSe2. 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.
Databáze: OpenAIRE