Carbon substitution effect in MgB${}_2$

Jai Seok Ahn, Eun Jip Choi

We investigated carbon substitution effect on boron plane of superconducting MgB${}_2$. MgB${}_2$ and MgB${}_{1.8}$C${}_{0.2}$ samples are synthesized under high pressure furnace. MgB$_{1.…