The suppression of superconductivity in Mn substituted MgCNi$_{3}$

A. Das; R. K. Kremer

doi:10.1103/PhysRevB.68.064503

The suppression of superconductivity in Mn substituted MgCNi$_{3}$

Superconductivity 2009-11-10 v2

Authors: A. Das , R. K. Kremer

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Abstract

We report the effect of doping Mn in the isostructural MgCNi $_{3-x}$ Mn $_{x}$ (x = 0-0.05) compounds. Magnetic susceptibility, resistivity, magneto-resistance, and specific heat studies show evidence of localized moments and Kondo effect in samples with x $\neq$ 0. The rapid suppression of superconductivity ( $\sim$ -21K/at.% Mn) in these compounds is a consequence of pair breaking effects due to moment formation on Mn.

Keywords

superconductivity suppression Mn substitution MgCNi3 Kondo effect pair breaking

Cite

@article{arxiv.cond-mat/0306052,
  title  = {The suppression of superconductivity in Mn substituted MgCNi$_{3}$},
  author = {A. Das and R. K. Kremer},
  journal= {arXiv preprint arXiv:cond-mat/0306052},
  year   = {2009}
}

Comments

9 figures, Accepted for publication in Physical Review B, Added references

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