Superconductivity and structural distortion in BaPt2As2

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 BaPt₂As₂

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

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We report the synthesis of BaPt₂As₂ single crystals and the discovery of superconductivity and a structural phase transition in this compound by measuring the electrical resistivity, magnetic susceptibility and specific heat as well as the x-ray diffraction at low temperatures. BaPt₂As₂ crystallizes in the CaBe₂Ge₂-type tetragonal structure (P4/nmm) at room temperature and undergoes a first-order structural transition at T_S≃ 275K, which is likely to be associated with a charge-density-wave (CDW) instability. BCS-like superconductivity with two subsequent transitions T_c1≃1.67K and T_c2≃1.33K is observed. Our results demonstrate that BaPt₂As₂ may serve as a new system for studying the interplay of superconductivity and the CDW order.

Original language	English
Article number	022202
Journal	Journal of Physics Condensed Matter
Volume	27
Issue number	2
DOIs	https://doi.org/10.1088/0953-8984/27/2/022202
State	Published - 21 Jan 2015
Externally published	Yes

Keywords

charge density wave
structural distortion
superconducting materials

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10.1088/0953-8984/27/2/022202

Cite this

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title = "Superconductivity and structural distortion in BaPt2As2",

abstract = "We report the synthesis of BaPt2As2 single crystals and the discovery of superconductivity and a structural phase transition in this compound by measuring the electrical resistivity, magnetic susceptibility and specific heat as well as the x-ray diffraction at low temperatures. BaPt2As2 crystallizes in the CaBe2Ge2-type tetragonal structure (P4/nmm) at room temperature and undergoes a first-order structural transition at TS≃ 275K, which is likely to be associated with a charge-density-wave (CDW) instability. BCS-like superconductivity with two subsequent transitions Tc1≃1.67K and Tc2≃1.33K is observed. Our results demonstrate that BaPt2As2 may serve as a new system for studying the interplay of superconductivity and the CDW order.",

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doi = "10.1088/0953-8984/27/2/022202",

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T1 - Superconductivity and structural distortion in BaPt2As2

AU - Jiang, W. B.

AU - Guo, C. Y.

AU - Weng, Z. F.

AU - Wang, Y. F.

AU - Chen, Y. H.

AU - Chen, Y.

AU - Pang, G. M.

AU - Shang, T.

AU - Lu, X.

AU - Yuan, H. Q.

PY - 2015/1/21

Y1 - 2015/1/21

N2 - We report the synthesis of BaPt2As2 single crystals and the discovery of superconductivity and a structural phase transition in this compound by measuring the electrical resistivity, magnetic susceptibility and specific heat as well as the x-ray diffraction at low temperatures. BaPt2As2 crystallizes in the CaBe2Ge2-type tetragonal structure (P4/nmm) at room temperature and undergoes a first-order structural transition at TS≃ 275K, which is likely to be associated with a charge-density-wave (CDW) instability. BCS-like superconductivity with two subsequent transitions Tc1≃1.67K and Tc2≃1.33K is observed. Our results demonstrate that BaPt2As2 may serve as a new system for studying the interplay of superconductivity and the CDW order.

AB - We report the synthesis of BaPt2As2 single crystals and the discovery of superconductivity and a structural phase transition in this compound by measuring the electrical resistivity, magnetic susceptibility and specific heat as well as the x-ray diffraction at low temperatures. BaPt2As2 crystallizes in the CaBe2Ge2-type tetragonal structure (P4/nmm) at room temperature and undergoes a first-order structural transition at TS≃ 275K, which is likely to be associated with a charge-density-wave (CDW) instability. BCS-like superconductivity with two subsequent transitions Tc1≃1.67K and Tc2≃1.33K is observed. Our results demonstrate that BaPt2As2 may serve as a new system for studying the interplay of superconductivity and the CDW order.

KW - charge density wave

KW - structural distortion

KW - superconducting materials

UR - https://www.scopus.com/pages/publications/84919608854

U2 - 10.1088/0953-8984/27/2/022202

DO - 10.1088/0953-8984/27/2/022202

M3 - 文章

AN - SCOPUS:84919608854

SN - 0953-8984

VL - 27

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 2

M1 - 022202

ER -

Superconductivity and structural distortion in BaPt₂As₂

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Keywords

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