Superconductivity and multiple pressure-induced phases in BaPt2As2

C. Y. Guo, W. B. Jiang, M. Smidman, F. Han, C. D. Malliakas, B. Shen, Y. F. Wang, Y. Chen, X. Lu, Mercouri G Kanatzidis, H. Q. Yuan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The recently discovered BaPt2As2 shows a structural distortion at around 275 K, followed by the emergence of superconductivity at lower temperatures. Here we identify the presence of charge-density-wave order at room temperature and ambient pressure using single-crystal x-ray diffraction, with both a superlattice and an incommensurate modulation, where there is a change of the superlattice structure below ≃275 K. Upon applying pressure, BaPt2As2 shows a rich temperature-pressure phase diagram with multiple pressure-induced transitions at high temperatures, the emergence or disappearance of which are correlated with sudden changes in the superconducting transition temperature Tc. These findings demonstrate that BaPt2As2 is a promising system for studying competing interactions and the relationship between high-temperature electronic instabilities and superconductivity.

Original languageEnglish
Article number184506
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume94
Issue number18
DOIs
Publication statusPublished - 2016

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Superconductivity
superconductivity
Temperature
Charge density waves
x ray diffraction
transition temperature
phase diagrams
Superconducting transition temperature
Phase diagrams
modulation
Diffraction
Modulation
Single crystals
single crystals
room temperature
X rays
electronics
interactions
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Guo, C. Y., Jiang, W. B., Smidman, M., Han, F., Malliakas, C. D., Shen, B., ... Yuan, H. Q. (2016). Superconductivity and multiple pressure-induced phases in BaPt2As2. Physical Review B - Condensed Matter and Materials Physics, 94(18), [184506]. https://doi.org/10.1103/PhysRevB.94.184506

Superconductivity and multiple pressure-induced phases in BaPt2As2. / Guo, C. Y.; Jiang, W. B.; Smidman, M.; Han, F.; Malliakas, C. D.; Shen, B.; Wang, Y. F.; Chen, Y.; Lu, X.; Kanatzidis, Mercouri G; Yuan, H. Q.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 94, No. 18, 184506, 2016.

Research output: Contribution to journalArticle

Guo, CY, Jiang, WB, Smidman, M, Han, F, Malliakas, CD, Shen, B, Wang, YF, Chen, Y, Lu, X, Kanatzidis, MG & Yuan, HQ 2016, 'Superconductivity and multiple pressure-induced phases in BaPt2As2', Physical Review B - Condensed Matter and Materials Physics, vol. 94, no. 18, 184506. https://doi.org/10.1103/PhysRevB.94.184506
Guo, C. Y. ; Jiang, W. B. ; Smidman, M. ; Han, F. ; Malliakas, C. D. ; Shen, B. ; Wang, Y. F. ; Chen, Y. ; Lu, X. ; Kanatzidis, Mercouri G ; Yuan, H. Q. / Superconductivity and multiple pressure-induced phases in BaPt2As2. In: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Vol. 94, No. 18.
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