skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

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 - xCo x) 2 As 2 single crystals with x = 0.057, which is near the antiferromagnetic instability. Resistivity ρ = ρ 0 + AT n 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:
 [1];  [2];  [3];  [4];  [4];  [5];  [6];  [7];  [7];  [8];  [3]
  1. Center for High Pressure Science and Technology Advanced Research, Beijing (China); Zhejiang SCI-TECH Univ., Hangzhou (China)
  2. 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).
  3. Center for High Pressure Science and Technology Advanced Research, Beijing (China)
  4. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  5. Nanyang Technological Univ. (Singapore). Division of Physics and Applied Physics, School of Physical and Mathematical Sciences
  6. Zhejiang SCI-TECH Univ., Hangzhou (China)
  7. Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Functional Materials for Informatics, Shanghai Inst. of Microsystem and Information Technology
  8. Kent State Univ., Kent, OH (United States). Dept. of Physics
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
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.
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. doi:10.1103/PhysRevB.97.144515.
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. doi:10.1103/PhysRevB.97.144515. https://www.osti.gov/servlets/purl/1436424.
@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 = {2018},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

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


Neutron scattering study of the interplay between structure and magnetism in Ba ( Fe 1 x Co x ) 2 As 2
journal, April 2009


Superconductivity and Quantum Criticality in C e C o I n 5
journal, September 2002


Evidence for a generic quantum transition in high- T c cuprates
journal, August 2002


Anomalous Criticality in the Electrical Resistivity of La2-xSrxCuO4
journal, January 2009


Superconductivity up to 29 K in SrFe 2 As 2 and BaFe 2 As 2 at high pressures
journal, December 2008


Electrical transport measurements under pressure for BaFe 2 As 2 compounds doped with Co, Cr, or Sn
journal, April 2010


Universality and unconventional enhancement of flux-flow resistivity in Ba ( Fe 1 x Co x ) 2 As 2
journal, May 2017


Evolution of bulk superconductivity in SrFe 2 As 2 with Ni substitution
journal, June 2009


Decoupling of the superconducting and magnetic/structural phase transitions in electron-doped BaFe 2 As 2
journal, August 2009


Thermal Expansion and Grüneisen Parameters of Ba ( Fe 1 x Co x ) 2 As 2 : A Thermodynamic Quest for Quantum Criticality
journal, April 2012


Disappearance of superconductivity in overdoped La 2 x Sr x CuO 4 at a structural phase boundary
journal, June 1992


Disorder in quantum critical superconductors
journal, December 2013

  • Seo, S.; Lu, Xin; Zhu, J-X.
  • Nature Physics, Vol. 10, Issue 2
  • DOI: 10.1038/nphys2820

Hall-plot of the phase diagram for Ba(Fe1−xCox)2As2
journal, June 2016

  • Iida, Kazumasa; Grinenko, Vadim; Kurth, Fritz
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep28390

Where is the quantum critical point in the cuprate superconductors?
journal, March 2010


Structural collapse and superconductivity in rare-earth-doped CaFe 2 As 2
journal, January 2012


Complete pressure-dependent phase diagrams for SrFe 2 As 2 and BaFe 2 As 2
journal, June 2009


FeAs-Based Superconductivity: A Case Study of the Effects of Transition Metal Doping on BaFe 2 As 2
journal, August 2010


Phase diagrams of Ba ( Fe 1 x M x ) 2 As 2 single crystals ( M = Rh and Pd)
journal, July 2009


Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2
journal, March 2013

  • Kudo, Kazutaka; Iba, Keita; Takasuga, Masaya
  • Scientific Reports, Vol. 3, Issue 1
  • DOI: 10.1038/srep01478

Decompression-Driven Superconductivity Enhancement in In 2 Se 3
journal, July 2017


Quantum criticality in heavy-fermion metals
journal, March 2008

  • Gegenwart, Philipp; Si, Qimiao; Steglich, Frank
  • Nature Physics, Vol. 4, Issue 3
  • DOI: 10.1038/nphys892

Superconductivity in iron compounds
journal, December 2011


Relationship between critical current and flux-flow resistivity in the mixed state of Ba ( Fe 1 x Co x ) 2 As 2
journal, September 2017


Pressure effects on two superconducting iron-based families
journal, September 2011


Signatures of quantum criticality in the thermopower of Ba(Fe 1 x Co x ) 2 As 2
journal, June 2013


Pressure effects on the electron-doped high T c superconductor BaFe 2− x Co x As 2
journal, October 2008


Quantum criticality in electron-doped BaFe2−xNixAs2
journal, August 2013

  • Zhou, R.; Li, Z.; Yang, J.
  • Nature Communications, Vol. 4, Issue 1
  • DOI: 10.1038/ncomms3265