Influence of Carbon Concentration on the Superconductivity in MgCxNi3

Details Influence of Carbon Concentration on the Superconductivity in MgCxNi3 Influence of Carbon Concentration on the Superconductivity in MgCxNi3

2003-02-06

arxiv.org/abs/cond-mat/0302116v1

Physical Review B 68, 024523(2003)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.68.024523

The influence of carbon concentration on the superconductivity (SC) in MgC$_{x}$Ni$_3$ has been investigated by measuring the low temperature specific heat combined with first principles electronic structure calculation. It is found that the specific heat coefficient $\gamma_n=C_{en}/T$ of the superconducting sample ($x\approx1$) in normal state is twice that of the non-superconducting one ($x\approx 0.85$). The comparison of measured $\gamma_n$ and the calculated electronic density of states (DOS) shows that the effective mass renormalization changes remarkably as the carbon concentration changes. The large mass renormalization for the superconducting sample and the low $T_{c}$(7K) indicate that more than one kind of boson mediated electron-electron interactions exist in MgC$_{x}$Ni$_3$.

Affiliated with

Also associated with

No associations

Rating

Influence of Carbon Concentration on the Superconductivity in MgCxNi3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Influence of Carbon Concentration on the Superconductivity in MgCxNi3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of Carbon Concentration on the Superconductivity in MgCxNi3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-99372