Noncontact atomic force microscopy and density functional theory studies of the (2×2) reconstructions of the polar AlN(0001) surface
Chaumeton, F. Centre d'Élaboration de Matériaux et d'Etudes Structurales
Robles, Roberto (Institut Català de Nanociència i Nanotecnologia)
Pruneda, Miguel (Institut Català de Nanociència i Nanotecnologia)
Lorente Palacios, Nicolás (Institut Català de Nanociència i Nanotecnologia)
Eydoux, Benoit (Centre d'Élaboration de Matériaux et d'Etudes Structurales)
Bouju, Xavier (Centre d'Élaboration de Matériaux et d'Etudes Structurales)
Gauthier, Sébastien (Centre d'Élaboration de Matériaux et d'Etudes Structurales)
Martrou, David (Centre d'Élaboration de Matériaux et d'Etudes Structurales)

Date:	2016
Abstract:	Combined experimental and theoretical studies permit us to determine new protocols for growing by molecular beam epitaxy the technologically interesting N-rich aluminum nitride (AlN) surfaces. This is achieved by dosing the precursor gases at unusually low rates. With the help of calculated structures by using density functional theory and Boltzmann distribution of the reconstructed cells, we proposed to assign the measured surface obtained with a growth rate of 10 nm/h to a (2×2) reconstructed surface involving one additional N atom per unit cell. These N-rich AlN surfaces could open new routes to dope AlN layers with important implications in high-power and temperature technological applications.
Grants:	European Commission 610446 European Commission 270028
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Physical review B, Vol. 94, issue 16 (Oct. 2016) , art. 165305, ISSN 2469-9969

DOI: 10.1103/PhysRevB.94.165305

Postprint 7 p, 3.1 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles