Superconductivity and structural distortion in BaPt$_2$As$_2$

W. B. Jiang; C. Y. Guo; Z. F. Weng; Y. F. Wang; Y. H. Chen; Y. Chen; G. M. Pang; T. Shang; X. Lu; H. Q. Yuan

doi:10.1088/0953-8984/27/2/022202

Superconductivity and structural distortion in BaPt$_2$As$_2$

Superconductivity 2015-06-23 v2

Authors: W. B. Jiang , C. Y. Guo , Z. F. Weng , Y. F. Wang , Y. H. Chen , Y. Chen , G. M. Pang , T. Shang , X. Lu , H. Q. Yuan

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Abstract

We successfully synthesized the BaPt $_2$ As $_2$ single crystals and studied their structural and physical properties at low temperatures. BaPt $_2$ As $_2$ crystallizes in the CaBe $_2$ Ge $_2$ -type tetragonal structure (P4/nmm) at room temperature and undergoes a first-order structural transition at $T_S\simeq 275$ K, which is likely associated with a charge-density-wave (CDW) instability. BCS-type superconductivity with two subsequent transitions at $T_{c1}=1.67$ K and $T_{c2}$ =1.33K are observed in this compound. Thus, BaPt $_2$ As $_2$ may serve as a new system for studying the interplay of superconductivity and the CDW order.

Keywords

single crystal superconductivity superconductivity high-temperature superconductivity

Cite

@article{arxiv.1409.7859,
  title  = {Superconductivity and structural distortion in BaPt$_2$As$_2$},
  author = {W. B. Jiang and C. Y. Guo and Z. F. Weng and Y. F. Wang and Y. H. Chen and Y. Chen and G. M. Pang and T. Shang and X. Lu and H. Q. Yuan},
  journal= {arXiv preprint arXiv:1409.7859},
  year   = {2015}
}

Comments

6 pages, 6 figures, minor revision

Superconductivity and structural distortion in BaPt$_2$As$_2$

Abstract

Keywords

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