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| Hauptseite > Publications database > Uniaxial c -axis pressure effects on the underdoped superconductor BaFe$_{2}$( As $_{0.72}$ P$_{0.28}$ )$_{2}$ |
| Hauptseite > Publications database > Uniaxial c -axis pressure effects on the underdoped superconductor BaFe$_{2}$( As $_{0.72}$ P$_{0.28}$ )$_{2}$ |
| Journal Article | IMPULSE-2020-00135 |
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2020
Inst.
Woodbury, NY
Please use a persistent id in citations: doi:10.1103/PhysRevB.101.020507
Abstract: The optimal superconductivity (Tc ≈ 30 K) in BaFe$_2$(As$_{1−x}$ P$_x$ )$_2$ can be reached when the coupled antiferromagnetic (AF) order (TN) and orthorhombic lattice distortion (Ts) are suppressed to zero temperature with increasing of P concentration or hydrostatic pressure. Here we use transport and neutron scattering to study the c-axis pressure effects on electronic phases in underdoped BaFe$_2$(As$_{1−x}$ P$_x$ )$_2$, which has T$_N$ = T$_s$ ≈ 40 K and T$_c$ ≈ 28 K at zero pressure. With increasing c-axis pressure, T$_N$ and T$_s$ are slightly enhanced around P$_c$ ∼ 20 MPa. Upon further increasing pressure, AF order is gradually suppressed to zero, while T$_c$ is enhanced to 30 K. Our results reveal the importance of magnetoelastic couplings in BaFe$_2$(As$_{1−x}$ P$_x$ )$_2$ , suggesting that the c-axis pressure can be used as a tuning parameter to manipulate the electronic phases in iron pnictides.
Keyword(s): Energy (1st) ; Condensed Matter Physics (2nd)
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