Abstract
The properties of a range of transition metals and their complexes with hydrogen are studied using local-density-functional methods. The location of the impurity-related bands strongly affects the electronic and magnetic properties of both substitutional and interstitial impurities, with high spins being preferred in line with Hund’s rule. The relative formation energies of the defects are considered and the favorable defect for various growth conditions under equilibrium discerned, indicating strongly bound impurity pairs and impurity-hydrogen complexes. H-related local vibrational modes are compared with experimental observations, and in particular models proposed in the literature for complexes have been examined.
3 More- Received 22 June 2005
DOI:https://doi.org/10.1103/PhysRevB.72.155108
©2005 American Physical Society