Title: Trigonal paramagnetic interface defect in epitaxial Ge3N4/(111)Ge
Authors: Nguyen, Duc Anh ×
Stesmans, Andre
Afanas'ev, Valeri
Lieten, Ruben
Borghs, Gustaaf #
Issue Date: Nov-2009
Publisher: Amer inst physics
Series Title: Applied physics letters vol:95 issue:18
Article number: 183501
Abstract: We report on the observation by electron spin resonance (ESR) of an anisotropic paramagnetic defect at the interface of epitaxially grown Ge3N4/(111)Ge entities with nanometer thin Ge3N4 layers. The defect exhibits trigonal C-3v symmetry characterized by g approximate to 2.0023 and g(perpendicular to)approximate to 2.0032, and is observed most prominently after 10 eV optical excitation, with maximum areal density approximate to 2x10(11) cm(-2). The defect is suggested to concern the Ge K-type center, its occurrence appearing inherent to the specific heteroepitaxial interface matching.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Semiconductor Physics Section
Solid State Physics and Magnetism Section
Hydraulics Section
× corresponding author
# (joint) last author

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