A crossover in phase diagram of NaFe${}_{1-x}$Co${}_x$As determined by electronic transport measurements

Abstract

We report electronic transport measurements on single crystals of NaFe${}_{1-x}$Co${}_x$As system. We found that the cotangent of Hall angle, cot${\theta }_{\mathrm{H}}$, follows $T^4$ for the parent compound with filamentary superconductivity and $T^2$ for the heavily-overdoped non-superconducting sample. While it exhibits approximately $T^3$-dependence in all the superconducting samples, suggesting this behaivor is associated with bulk superconductivity in ferropnictides. A deviation develops below a characteristic temperature $T^{\ast }$ well above the structural and superconducting transitions, accompanied by a departure from power-law temperature dependence in resistivity. The doping dependence of $T^{\ast }$ resembles the crossover line of pseudogap phase in cuprates.

arXiv comment6 pages, 6 figures

References in corpus (24)

• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• High-temperature superconductivity in iron-based materials
• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• An Intrinsic Bond-Centered Electronic Glass with Unidirectional Domains in Underdoped Cuprates
• Broken rotational symmetry in the pseudogap phase of a high-Tc superconductor
• Symmetry breaking orbital anisotropy on detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition
• Electronic liquid crystal state in the high-temperature superconductor YBCO(6.45)
• Electrical Resistivity Anisotropy from Self-Organized One-Dimensionality in High-Temperature Superconductors
• Nematic and meta-nematic transitions in the iron pnictides
• Spin Waves and Magnetic Exchange Interactions in CaFe2As2
• Electronic Phase Diagram of High-T_c Cuprate Superconductors from a Mapping of the In-Plane Resistivity Curvature
• How Cooper pairs vanish approaching the Mott insulator in Bi2Sr2CaCu2O8+d
• Spin dynamics in the pseudogap state of a high-temperature superconductor
• In-plane anisotropy of spin excitations in the normal and superconducting states of underdoped YBa${}_2$Cu${}_3$O${}_{6+x}$
• Dynamic Stripes and Resonance in the Superconducting and Normal Phases of YBa2Cu3O6.5 Ortho-II Superconductor
• The Unusual Superconducting State at 49 K in Electron-Doped CaFe2As2 at Ambient
• Phase Diagram and Calorimetric Properties of NaFe${}_{1-x}$Co${}_x$As
• Hole superconductivity in the electron-doped superconductor PCCO
• The Hall effect in Zn-doped YBa_{2}Cu_{3}O_{7-δ} revisited: Hall angle and the pseudogap
• Anisotropic resistivity of Na${}_{1-\delta }$Fe${}_{1-x}$Co${}_x$As
• Systematics of the temperature-dependent inter-plane resistivity in Ba(Fe${}_{1-x}$T${}_x$)${}_2$As${}_2$ with T= Rh, Ni, and Pd
• Influence of doping level on the Hall coefficient and on the thermoelectric power in $N{d}_{2-x}C{e}_{x}Cu{O}_4$

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• Extreme anisotropy and anomalous transport properties of heavily electron doped Lix(NH3)yFe2Se2 single crystals
• Phase diagram and physical properties of NaFe${}_{1-x}$Cu${}_x$As single crystals
• Electron Mass Enhancement near a Nematic Quantum Critical Point in NaFe${}_{1-x}$Co${}_x$As
• The upper critical field of NaFe${}_{1-x}$Co${}_x$As superconductors
• Electron doping evolution of the neutron spin resonance in NaFe${}_{1-x}$Co${}_x$As
• Weak-coupling superconductivity in a strongly correlated iron pnictide
• Phase diagram and neutron spin resonance of superconducting NaFe${}_{1-x}$Cu${}_x$As
• Structural Evolution and Onset of the Density Wave Transition in the CDW Superconductor LaPt${}_2$Si${}_2$ Clarified with Synchrotron XRD
• Non-Conventional Critical Behavior and Q-dependent Electron-Phonon Coupling Induced Phonon Softening in the CDW Superconductor LaPt2Si2
• Local transformation of the Electronic Structure and Generation of Free Carriers in Cuprates and Ferropnictides under Heterovalent and Isovalent Doping
• Combined resistivity and Hall effect study on NaFe${}_{1-x}$Rh${}_x$As single crystals
• New pairing mechanism via chiral electron-hole condensation for non-BCS superconductivity