Gao, S., Zhang, A., Zhu, J. et al. (1 more author) (2004) Anisotropic spectroscopy of nitrogen K-edge in group-III nitrides. Applied Physics Letters, 84 (15). pp. 2784-2786. ISSN 0003-6951
Ab initio calculation of nitrogen K-edges for use in the core-level spectroscopy of industrially important group-III nitrides (AlN, GaN, InN) has been carried out systematically including the core-hole effect. The theoretical spectra for transition into final states with px,y and pz symmetries are in good agreement with the available anisotropic electron energy-loss measurements. Our spectra can be used as "fingerprints" to characterize the group-III nitrides, for example, not only to distinguish between different polymorphs of group-III nitrides, but also to identify the presence of surface oxidation. We have also presented our simulated results in terms of an orientation-average spectrum and a sample orientation-dependent dichroic spectrum for future reference.
|Institution:||The University of York|
|Academic Units:||The University of York > Physics (York)|
|Depositing User:||York RAE Import|
|Date Deposited:||12 Aug 2009 13:41|
|Last Modified:||12 Aug 2009 13:41|
|Publisher:||American Institute of Physics|