Physics – Condensed Matter – Materials Science
Scientific paper
2009-11-08
Physics
Condensed Matter
Materials Science
Scientific paper
10.1016/j.cplett.2011.02.042
The stability of atomic intercalated carbon $K_{4}$ crystals, XC$_{2}$ (X=H, Li, Be, B, C, N, O, F, Na, Mg, Al, Si, P, S, Cl, K, Ca, Ga, Ge, As, Se, Br, Rb or Sr) is evaluated by geometry optimization and frozen phonon analysis based on first principles calculations. Although C $K_{4}$ is unstable, NaC$_{2}$ and MgC$_{2}$ are found to be stable. It is shown that NaC$_{2}$ and MgC$_{2}$ are metallic and semi conducting, respectively.
Adschiri Tadafumi
Itoh Masahiro
Kawazoe Yoshiyuki
Takami Seiichi
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