Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2 near the antiferromagnetic boundary

Liu, W.; Wu, Y. F.; Li, X. J.; Bud'ko, S. L.; Canfield, P. C.; Panagopoulos, C.; Li, P. G.; Mu, G.; Hu, T.; Almasan, C. C.; Xiao, H.

doi:10.1103/PhysRevB.97.144515

Title: Pressure-tuned superconductivity and normal-state behavior in $Ba ({Fe}_{0.943} {Co}_{0.057})_{2} {As}_{2}$ near the antiferromagnetic boundary

Abstract

Superconductivity in iron pnictides is unconventional and pairing may be mediated by magnetic fluctuations in the Fe sublattice. Pressure is a clean method to explore superconductivity in iron based superconductors by tuning the ground state continuously without introducing disorder. Here we present a systematic high pressure transport study in Ba (Fe_{1 - x}Co_x)₂ As₂ single crystals with x = 0.057, which is near the antiferromagnetic instability. Resistivity ρ = ρ₀ + ATⁿ was studied under applied pressure up to 7.90 GPa. The parameter n approaches a minimum value of n ≈ 1 at a critical pressure P_c = 3.65 GPa. Near P_c, the superconducting transition temperature T c reaches a maximum value of 25.8 K. In addition, the superconducting diamagnetism at 2 K shows a sudden change around the same critical pressure. Finally, these results may be associated with a possible quantum critical point hidden inside the superconducting dome, near optimum T_c.

Authors:

Liu, W. ^[1]; Wu, Y. F. ^[2]; Li, X. J. ^[3]; Bud'ko, S. L. ^[4]; Canfield, P. C. ^[4]; Panagopoulos, C. ^[5]; Li, P. G. ^[6]; Mu, G. ^[7]; Hu, T. ^[7]; Almasan, C. C. ^[8]; Xiao, H. ^[3]

Center for High Pressure Science and Technology Advanced Research, Beijing (China); Zhejiang SCI-TECH Univ., Hangzhou (China)
Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Functional Materials for Informatics, Shanghai Inst. of Microsystem and Information Technology; Univ. of Chinese Academy of Sciences, Beijing (China).
Center for High Pressure Science and Technology Advanced Research, Beijing (China)
Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
Nanyang Technological Univ. (Singapore). Division of Physics and Applied Physics, School of Physical and Mathematical Sciences
Zhejiang SCI-TECH Univ., Hangzhou (China)
Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Functional Materials for Informatics, Shanghai Inst. of Microsystem and Information Technology
Kent State Univ., Kent, OH (United States). Dept. of Physics

Publication Date:: Mon Apr 23 00:00:00 EDT 2018

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1436424

Alternate Identifier(s):: OSTI ID: 1434348

Report Number(s):: IS-J-9648
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1900179

Grant/Contract Number:: 11574338; AC02-07CH11358; DMR-1505826; U1530402

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 97; Journal Issue: 14; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Liu, W., Wu, Y. F., Li, X. J., Bud'ko, S. L., Canfield, P. C., Panagopoulos, C., Li, P. G., Mu, G., Hu, T., Almasan, C. C., and Xiao, H. Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2 near the antiferromagnetic boundary.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevB.97.144515.

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                    Liu, W., Wu, Y. F., Li, X. J., Bud'ko, S. L., Canfield, P. C., Panagopoulos, C., Li, P. G., Mu, G., Hu, T., Almasan, C. C., & Xiao, H. Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2 near the antiferromagnetic boundary.  United States.  https://doi.org/10.1103/PhysRevB.97.144515

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                    Liu, W., Wu, Y. F., Li, X. J., Bud'ko, S. L., Canfield, P. C., Panagopoulos, C., Li, P. G., Mu, G., Hu, T., Almasan, C. C., and Xiao, H. Mon .  
"Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2 near the antiferromagnetic boundary".  United States.  https://doi.org/10.1103/PhysRevB.97.144515.  https://www.osti.gov/servlets/purl/1436424.

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@article{osti_1436424,

  title        = {Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2 near the antiferromagnetic boundary},

  author       = {Liu, W. and Wu, Y. F. and Li, X. J. and Bud'ko, S. L. and Canfield, P. C. and Panagopoulos, C. and Li, P. G. and Mu, G. and Hu, T. and Almasan, C. C. and Xiao, H.},

  abstractNote = {Superconductivity in iron pnictides is unconventional and pairing may be mediated by magnetic fluctuations in the Fe sublattice. Pressure is a clean method to explore superconductivity in iron based superconductors by tuning the ground state continuously without introducing disorder. Here we present a systematic high pressure transport study in Ba (Fe1 - xCox)2 As2 single crystals with x = 0.057, which is near the antiferromagnetic instability. Resistivity ρ = ρ0 + ATn was studied under applied pressure up to 7.90 GPa. The parameter n approaches a minimum value of n ≈ 1 at a critical pressure Pc = 3.65 GPa. Near Pc, the superconducting transition temperature T c reaches a maximum value of 25.8 K. In addition, the superconducting diamagnetism at 2 K shows a sudden change around the same critical pressure. Finally, these results may be associated with a possible quantum critical point hidden inside the superconducting dome, near optimum Tc.},

  doi          = {10.1103/PhysRevB.97.144515},

  journal      = {Physical Review B},

  number       = 14,

  volume       = 97,

  place        = {United States},

  year         = {Mon Apr 23 00:00:00 EDT 2018},

  month        = {Mon Apr 23 00:00:00 EDT 2018}

}

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Works referencing / citing this record:

Pressure tuning of iron-based superconductor Ca ₁₀ (Pt ₃ As ₈ ) ((Fe _0.95 Pt _0.05 ) ₂ As ₂ ) ₅
journal, February 2019

Yin, X.; Zhang, C.; Mu, G.
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DOI: 10.1088/1361-648x/aaffae

Pressure effects on iron-based superconductor CaFe _0.88 Co _0.12 AsF
journal, May 2019

Huang, J.; Zhang, C.; Ma, Y. H.
Journal of Physics: Condensed Matter, Vol. 31, Issue 32
DOI: 10.1088/1361-648x/ab1ef6

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Title: Pressure-tuned superconductivity and normal-state behavior in Ba ( Fe 0.943 Co 0.057 ) 2 As 2 near the antiferromagnetic boundary

Abstract

Citation Formats

A Sharp Peak of the Zero-Temperature Penetration Depth at Optimal Composition in BaFe2(As1-xPx)2 journal, June 2012

Determination of the phase diagram of the electron-doped superconductor Ba ( Fe 1 − x Co x ) 2 As 2 journal, January 2009

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Title: Pressure-tuned superconductivity and normal-state behavior in $Ba ({Fe}_{0.943} {Co}_{0.057})_{2} {As}_{2}$ near the antiferromagnetic boundary

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