1 Retraction Note to: Electronic Materials Letters, Vol. 6, No. 2, pp. 65–70 (2010) https://doi.org/10.3365/eml.2010.06.065

The Editor-in-Chief and Editorial Board of Electronic Materials Letters have retracted this article [1] because its contents have been previously published by Nakamura et al. [2]. The contents of this article are therefore redundant. Author Soon-Gi Shin has not responded to correspondence from the editor about this retraction.