Specific Heat of Ca0.33Na0.67Fe2As2

J. S. Kim; K. Zhao; C. Q. Jin; G. R. Stewart

doi:10.1016/j.ssc.2014.05.018

Specific Heat of Ca0.33Na0.67Fe2As2

Superconductivity 2014-07-01 v1

Authors: J. S. Kim , K. Zhao , C. Q. Jin , G. R. Stewart

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Abstract

The specific heat of single crystal hole-doped Ca0.33Na0.67Fe2As2, Tc(onset)=33.7 K, was measured from 0.4 to 40 K. The discontinuity in the specific heat at Tc, deltaC, divided by Tc is 105 +- 5 mJ/molK2, consistent with values found previously for hole-doped Ba0.6K0.4Fe2As2 and somewhat above the general trend for deltaC/Tc vs Tc for the iron based superconductors established by Bud'ko, Ni and Canfield. The usefulness of measured valued of deltaC/Tc as an important metric for the quality of samples is discussed.

Keywords

specific heat Ca0.33Na0.67Fe2As2 iron-based superconductors hole-doped superconducting transition

Cite

@article{arxiv.1406.7519,
  title  = {Specific Heat of Ca0.33Na0.67Fe2As2},
  author = {J. S. Kim and K. Zhao and C. Q. Jin and G. R. Stewart},
  journal= {arXiv preprint arXiv:1406.7519},
  year   = {2014}
}

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