Vacancy-hydrogen complexes in germanium

B. J. Coomer^* and R. Jones
Department of Physics, The University of Exeter, Exeter, EX4 4QL, United Kingdom

S. Öberg^**
Department of Mathematics, University of Luleå, Luleå, S95 187, Sweden

P. R. Briddon
Department of Physics, The University of Newcastle upon Tyne,
Newcastle upon Tyne, NE1 7RU, United Kingdom

^* EPSRC and the ENDEASD network are thanked for computer time and financial support respectively.
^** Financially support by NFR and TFR, and computer support by PDC at KTH in Sweden are gratefully acknowledged.

Abstract

Local-density-functional pseudopotential theory is used to investigate the structural, electronic and vibrational properties of vacancy-hydrogen complexes in germanium. The results are compared with recent infrared absorption data from proton and deuteron implanted Ge. The acceptor and donor levels of the VH_n defects are derived semi-empirically from the relaxed structures.

 

• Introduction
• Results
• Concluding remarks
• Bibliography
• About this document ...