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| Hauptseite > Publikationsdatenbank > Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe$_{0.97}$Cr$_{0.03}$)$_2$(As$_{1−x}$P$_x$)$_2$ > print |
| Hauptseite > Publikationsdatenbank > Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe$_{0.97}$Cr$_{0.03}$)$_2$(As$_{1−x}$P$_x$)$_2$ > print |
| 001 | 862500 | ||
| 005 | 20210130001420.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevLett.122.037001 |2 doi |
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| 100 | 1 | _ | |a Zhang, Wenliang |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe$_{0.97}$Cr$_{0.03}$)$_2$(As$_{1−x}$P$_x$)$_2$ |
| 260 | _ | _ | |a College Park, Md. |c 2019 |b APS |
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| 520 | _ | _ | |a We have systematically studied physical properties of BaðFe0.97Cr0.03Þ2ðAs1−xPxÞ2, where super-conductivity in BaFe2ðAs1−xPxÞ2is fully suppressed by just 3% of Cr substitution of Fe. A quantum criticalpoint is revealed atx∼0.42, where non-Fermi-liquid behaviors similar to those in BaFe2ðAs1−xPxÞ2areobserved. Neutron diffraction and inelastic neutron scattering measurements suggest that the quantumcritical point is associated with the antiferromagnetic order, which is not of conventional spin-density-wavetype as evidenced by theω=Tscaling of spin excitations. On the other hand, no divergence of low-temperature nematic susceptibility is observed whenxis decreased to 0.42 from higher doping level,demonstrating that there are no nematic quantum critical fluctuations. Our results suggest that non-Fermi-liquid behaviors in iron-based superconductors can be solely resulted from the antiferromagnetic quantumcritical fluctuations, which cast doubts on the role of nematic fluctuations played in the normal-stateproperties in iron-based superconductors. |
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| 700 | 1 | _ | |a Li, Shiliang |0 P:(DE-HGF)0 |b 21 |e Corresponding author |
| 773 | _ | _ | |a 10.1103/PhysRevLett.122.037001 |g Vol. 122, no. 3, p. 037001 |0 PERI:(DE-600)1472655-5 |n 3 |p 037001 |t Physical review letters |v 122 |y 2019 |x 1079-7114 |
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