Concern has been raised about the publication of this article as we found similarities of this paper in the paper: Growth of high quality Mg-doped GaAs by molecular beam epitaxy and its properties, Jong Su Kim, D.Y. Lee and I.H. Bae, J.I. Lee, S.K. Noh, Jin Soo Kim, Gu Hyun Kim, Seungil Ban, Se-Kyung Kang, S.M. Kim, J.Y. Leem, Minhyon Jeon and J.S. Son, Journal of the Korean Physical Society 39, S518–S521 December 2001, https://doi.org/10.3938/jkps.39.S518. The simultaneous submission or duplicate publication of a manuscript, and the lack of consistent authorship attribution are considered serious breaches of scientific ethics.
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