Low-temperature transport properties of doped Ba0.57K0.43Fe2As2 superconductors in high magnetic field

Yueshen Wu; Jinghui Wang; Xiang Zhou; Peng Dong; Jiadian He; Bolun Teng; Johan Vanacken; Victor V. Moshchalkov; Kazunari Yamaura; Eiji Takayama-Muromachi; Jun Li

doi:10.1103/PhysRevB.103.184511

Low-temperature transport properties of doped Ba0.57K0.43Fe2As2 superconductors in high magnetic field

Yueshen Wu, Jinghui Wang, Xiang Zhou, Peng Dong, Jiadian He, Bolun Teng, Johan Vanacken, Victor V. Moshchalkov, Kazunari Yamaura, Eiji Takayama-Muromachi, Jun Li

DOI 10.1103/PhysRevB.103.184511 · Physical Review B

T1

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Abstract

For high-critical-temperature (high-Tc) superconductors, the normal state transport properties at low temperatures are of great importance to understand the Fermi surface structure and carrier profile. In this work we studied the doped ultrathin Ba0.57K0.43Fe2As2 system, a member of the optimally doped 122-type multigapped iron-based superconductors with complex superconducting gap structure. To explore the normal state resistivity below the zero-field superconducting Tc, both Co and Zn dopants were substituted into the superconducting Fe2As2 layer to suppress the superconductivity. The temperature dependence of in-plane resistivity below Tc reveals a typical metallic behavior with the magnetic fields up to 45 T along c axis. A linear dependence of Hall resistivity (ρxy) is observed for Ba0.57K0.43Fe2As2 and Ba0.57K0.43(Fe0.96Zn0.04)2As2 at high magnetic field, indicating a conventional metal profile. Nevertheless, the Co dopants lead to a decreasing dρxy/dH when the field is above 20 T. Such transformation of carrier transport properties may be contributed by band shift within a two-carrier model.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Ba0.57K0.43Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	38	Pressure not reported	unknown
Ba0.57K0.43(Fe0.97Co0.03)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	20	Pressure not reported	unknown
Ba0.57K0.43(Fe0.96Zn0.04)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	24	Pressure not reported	unknown
La1-xSrx2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2(Sr1-xLax)2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pr0.91LaCe0.09CuO4-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
LaFeAsO1-xFx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
SmFeAsO1-xFx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
BaFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown