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  1. Article

    Bandgap opening in few-layered monoclinic MoTe2

    Monoclinic transition metal dichalcogenides offer the possibility of topological quantum devices, but they are difficult to realize. One route may be through switching from the common hexagonal phase, for whic...

    Dong Hoon Keum, Suyeon Cho, Jung Ho Kim, Duk-Hyun Choe, Ha-Jun Sung… in Nature Physics (2015)

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    Article

    First-Principles Study of Ferromagnetism in Mn-Doped GaN

    We investigate the magnetic properties of Mn-doped GaN through first-principles pseudopotential calculations within the spin-density-functional approximation. We examine the nature of magnetic interactions bet...

    J. Kang, K. J. Chang, H. Katayama-Yoshida in Journal of Superconductivity (2005)

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    Chapter and Conference Paper

    First principles study of the lattice dynamical behavior of AlAs

    The ab initio pseudopotential method is used to examine lattice-dynamical properties of AlAs. The phonon frequencies at Γ and X in the Brillouin zone, the pressure dependence of the phonon modes, and the longitud...

    K. J. Chang, Marvin L. Cohen in Proceedings of the 17th International Conf… (1985)