Neutron scattering study of the interplay between structure and magnetism in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mtext>Ba</mml:mtext><mml:msub><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mtext>Fe</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Co</mml:mtext></mml:mrow><mml:mi>x</mml:mi></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:mrow><

Lester, C.; Chu, J.-H.; Analytis, James; Capelli, S.; Erickson, A. S.; Condron, Cathie L.; Toney, Michael F.; Fisher, I. R.; Hayden, Stephen M

doi:10.1103/physrevb.79.144523

Cited by 177 publications

(65 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Neutron diffraction measurements indicate Co doping rapidly suppresses * thu@mail.sim.ac.cn † hong.xiao@hpstar.ac.cn antiferromagnetism, with the antiferromagnetic order vanishing at x ≈ 0.055 [11]. For x = 0.06, it is suggested that superconductivity coexists with a spin density wave (SDW) [12].…”

Section: Introductionmentioning

confidence: 99%

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2
Liu
¹
,
Wu
²
,
Li
³

et al. 2018
Phys. Rev. B
5
1
2
0
View full text Add to dashboard Cite

Bud'ko, Sergey L.; Canfield, Paul 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" (2018). Ames Laboratory Accepted Manuscripts. 172. https://lib.dr.iastate.edu/ameslab_manuscripts/172Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2 near the antiferromagnetic boundary AbstractSuperconductivity 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 As 2 single crystals with x = 0.057, which is near the antiferromagnetic instability. Resistivity ρ = ρ 0 + A T 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. These results may be associated with a possible quantum critical point hidden inside the superconducting dome, near optimum T c . DisciplinesCondensed Matter Physics | Physics 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 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. These results may be associated with a possible quantum critical point hidden inside the superconducting dome, near optimum T c .

show abstract

Section: Introductionmentioning

confidence: 99%

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2
Liu
¹
,
Wu
²
,
Li
³

et al. 2018
Phys. Rev. B
5
1
2
0
View full text Add to dashboard Cite

show abstract

“…1(a)] [5][6][7]. Upon electron-doping via Co or Ni substitution for Fe, the T N and T s are gradually suppressed and optimal superconductivity emerges near x ≈ 0.1 for BaFe 2−x Ni x As 2 [8][9][10][11][12]. Due to the formation of twin domains in the orthorhombic state of BaFe 2−x T x As 2 below T s , the intrinsic electronic properties of these materials can be probed by applying a uniaxial pressure (strain) along one-axis of the orthorhombic lattice to detwin the single crystal [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Electronic nematic correlations in the stress-free tetragonal state ofBaFe2−xNixAs2

Man

Chen

et al. 2015

Phys. Rev. B

View full text Add to dashboard Cite

We use transport and neutron scattering to study electronic, structural, and magnetic properties of the electron-doped BaFe2−xNixAs2 iron pnictides in uniaxial strained and external stress free detwinned state. Using a specially designed in-situ mechanical detwinning device, we demonstrate that the in-plane resistivity anisotropy observed in the uniaxial strained tetragonal state of BaFe2−xNixAs2 below a temperature T * , previously identified as a signature of the electronic nematic phase, is also present in the stress free tetragonal phase below T * * (< T * ). By carrying out neutron scattering measurements on BaFe2As2 and BaFe1.97Ni0.03As2, we argue that the resistivity anisotropy in the stress free tetragonal state of iron pnictides arises from the magnetoelastic coupling associated with antiferromagnetic order. These results thus indicate that the local lattice distortion and nematic spin correlations are responsible for the resistivity anisotropy in the tetragonal state of stress free iron pnictides, and suggest that resistivity anisotropy, spin excitation anisotropy, and orbital ordering found in the paramagnetic state of uniaxial strained iron pnictides are due to the externally applied uniaxial strain and its coupling to nematic susceptibility.

show abstract

“…In addition, superconductivity can be stabilized with Co doping and has a dome-like appearance in the T − x phase diagram. For the superconducting coumpounds with lower doping levels, superconductivity coexists with antiferromagnetism in the orthorhombic state [152,153]. For higher Co doping levels both the structural and antiferromagnetic phase transitions are completely suppressed and superconductivity occurs in the tetragonal (paramagnetic) phase.…”

Section: Introduction and Overviewmentioning

confidence: 91%

“…Neutron scattering measurements shown in Fig. 5.10 (b) demonstrate that these features are associated with the separated structural / magnetic phase transitions [152,153]. The higher temperature feature corresponds to the structural phase transition whereas the lower temperature feature corresponds to the magnetic phase transition.…”

Section: Anisotropic H C2 (T ) Curvesmentioning

confidence: 96%

Structural/magnetic phase transitions and superconductivity in Ba(Fe1-xTMx)2As2 (TM=Co, Ni, Cu, Co/Cu, Rh and Pd) single crystals

2009

View full text Add to dashboard Cite

Neutron scattering study of the interplay between structure and magnetism inBa(Fe1−xCox)<

Cited by 177 publications

References 21 publications

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2
Liu
¹
,
Wu
²
,
Li
³

et al. 2018
Phys. Rev. B
5
1
2
0
View full text Add to dashboard Cite

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2
Liu
¹
,
Wu
²
,
Li
³

et al. 2018
Phys. Rev. B
5
1
2
0
View full text Add to dashboard Cite

Electronic nematic correlations in the stress-free tetragonal state ofBaFe2−xNixAs2

Structural/magnetic phase transitions and superconductivity in Ba(Fe<sub>1-x</sub>TM<sub>x</sub>)<sub>2</sub>As<sub>2</sub> (TM=Co, Ni, Cu, Co/Cu, Rh and Pd) single crystals

Contact Info

Product

Resources

About

Neutron scattering study of the interplay between structure and magnetism inBa(Fe1−xCox)<

Cited by 177 publications

References 21 publications

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2Liu1, Wu2, Li3 et al. 2018Phys. Rev. B5120View full textAdd to dashboardCite

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2Liu1, Wu2, Li3 et al. 2018Phys. Rev. B5120View full textAdd to dashboardCite

Electronic nematic correlations in the stress-free tetragonal state ofBaFe2−xNixAs2

Structural/magnetic phase transitions and superconductivity in Ba(Fe<sub>1-x</sub>TM<sub>x</sub>)<sub>2</sub>As<sub>2</sub> (TM=Co, Ni, Cu, Co/Cu, Rh and Pd) single crystals

Contact Info

Product

Resources

About

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2
Liu
¹
,
Wu
²
,
Li
³

et al. 2018
Phys. Rev. B
5
1
2
0
View full text Add to dashboard Cite

Pressure-tuned superconductivity and normal-state behavior in Ba(Fe0.943Co0.057)2As2
Liu
¹
,
Wu
²
,
Li
³

et al. 2018
Phys. Rev. B
5
1
2
0
View full text Add to dashboard Cite