Contrasting Pair-Breaking Effects by Doping Mn and Zn in Ba0.5K0.5Fe2As2

Abstract

Resistivity, Hall effect, magnetoresistance and DC magnetization were measured in Mn and Zn doped Ba${}_{0.5}$K${}_{0.5}$Fe${}_2$As${}_2$ samples. It is found that the Mn-doping can depress the superconducting transition temperature drastically with a rate of $\Delta T_c$/Mn-1% = -4.2 K, while that by Zn-doping is negligible. Detailed analysis reveals that the Mn-doping enhances the residual resistivity (${\rho }_0$) significantly, and induces strong local magnetic moments ($\sim$ 2.58 ${\mu }_B$) which play as pair breakers. While the impurity scattering measured by ${\rho }_0$ in the Zn-doped samples is much weaker, accompanied by a negligible pair breaking effect. A possible explanation is that the impurity scattering by the Zn impurities are mainly small angle scattering (or small momentum transfer), therefore it cannot break the pairing induced by the interpocket scattering and thus affect the superconducting transition temperature weakly.

7 pages, 7 figures, PRB in press

References in corpus (25)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO${}_{1-x}$F${}_x$}
• Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2
• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• Pairing Symmetry in a Two-Orbital Exchange Coupling Model of Oxypnictides
• The BCS-like gap in superconductor SmFeAsO_0.85F_0.15
• Multiband magnetism and superconductivity in Fe-based compounds
• ${}^{75}$As NMR studies of superconducting LaO${}_{0.9}$F${}_{0.1}$FeAs
• Microwave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor
• Evidence for nodal superconductivity in LaFePO
• NMR relaxation rate in superconducting pnictides: extended $s_{\pm }$ scenario
• Low temperature specific heat of the hole-doped Ba_{0.6}K_{0.4}Fe_2As_2 single crystals and electron-doped SmFeAsO_{0.9}F_{0.1} samples
• Fully Gapped Superconducting State Based on a High Normal State Quasiparticle Density of States in Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ Single Crystals
• Unconventional London penetration depth in Ba(Fe0.93Co0.07)2As2 single crystals
• Spin Fluctuations, Interband Coupling, and Unconventional Pairing in Iron-based Superconductors
• Superfluid density of the $\pm$s-wave state for the iron-based superconductors
• Quasiparticle Heat Transport in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$: Evidence for a k-dependent Superconducting Gap without Nodes
• Superconducting Gap and Pseudogap in Iron-Based Layered Superconductor La(O${}_{1-x}$F${}_x$)FeAs
• Nodal Superconductivity with Multiple Gaps in SmFeAsO${}_{0.9}$F${}_{0.1}$
• Two superconducting gaps in LaFeAsO0.92F0.08 revealed by 75As nuclear quadrupole resonance
• Antiferromagnetic Correlation and the Pairing Mechanism of the Cuprates and Iron Pnictides : a View From the Functional Renormalization Group Studies
• Effect of 3d Transition Metal Doping on the Superconductivity in Quaternary Fluoroarsenide CaFeAsF
• Effect of Zn doping on magnetic order and superconductivity in LaFeAsO
• Magnetic impurities in the two-band $s_{\pm }$-wave superconductors

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