Fishtail effect and vortex dynamics in LiFeAs single crystals

Abstract

We investigate the fishtail effect, critical current density ($J_c$) and vortex dynamics in LiFeAs single crystals. The sample exhibits a second peak (SP) in the magnetization loop only with the field $||$ c-axis. We calculate a reasonably high $J_c$, however, values are lower than in 'Ba-122' and '1111'-type FeAs-compounds. Magnetic relaxation data imply a strong pinning which appears not to be due to conventional defects. Instead, its behavior is similar to that of the triplet superconductor Sr${}_2$RuO${}_4$. Our data suggest that the origin of the SP may be related to a vortex lattice phase transition. We have constructed the vortex phase diagram for LiFeAs on the field-temperature plane.

5 pages, 5 figures

References in corpus (11)

• The superconductivity at 18 K in LiFeAs system
• LiFeAs: An Intrinsic FeAs-based Superconductor with Tc = 18K
• Vortex phase diagram of Ba(Fe0.93Co0.07)2As2 single crystals
• Weak superconducting pairing and a single isotropic energy gap in stoichiometric LiFeAs
• Magnetization Relaxation and Collective Vortex Pinning in the Fe-Based Superconductor SmFeAsO_0.9F_0.1
• Theory for Magnetism and Triplet Superconductivity in LiFeAs
• Vortex studies in superconducting Ba(Fe0.93Co0.07)2As2
• Critical current and vortex dynamics in single crystals of Ca(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Electronic properties of LaOFFeAs in the normal state probed by NMR/NQR
• Low energy spin dynamics in the antiferromagnetic phase of CaFe2As2
• Correlated electrons in Fe-As compounds: a quantum chemical perspective

Cited by in corpus (32)

• Functional Renormalization Group for multi-orbital Fermi Surface Instabilities
• Pauli-limiting effects in the upper critical fields of a clean LiFeAs single crystal
• Temperature dependence of lower critical field Hc1(T) shows nodeless superconductivity in FeSe
• Temperature and time scaling of the peak-effect vortex configuration in FeTe${}_{0.7}$Se${}_{0.3}$
• Doping-dependent critical current properties in K, Co, and P-doped BaFe2As2 single crystals
• Ultra-high critical current densities, the vortex phase diagram and the effect of granularity of the stoichiometric high-Tc superconductor, CaKFe${}_4$As${}_4$
• Universal Lower Limit on Vortex Creep in Superconductors
• Comparative study of vortex dynamics in CaKFe4As4 and Ba0.6K0.4Fe2As2 single crystals
• Lower critical field and SNS-Andreev spectroscopy of 122-arsenides: Evidence of nodeless superconducting gap
• Plastic pinning replaces collective pinning as the second magnetization peak disappears in the pnictide superconductor Ba-KFe${}_2$As${}_2$
• 75As NMR-NQR study in superconducting LiFeAs
• Nodeless superconductivity in the presence of spin-density wave in pnictide superconductors: The case of BaFe${}_{2-x}$Ni${}_x$As${}_2$
• Flux jumps and vortex pinning in Ba${}_{0.65}$Na${}_{0.35}$Fe${}_2$As${}_2$ single crystals
• Vortex pinning and dynamics in high performance Sr0.6K0.4Fe2As2 superconductor
• Anisotropic Ginzburg-Landau scaling of Hc2 and transport properties of 112-type Ca0.8La0.2Fe0.98Co0.02As2 single crystal
• Fish-tail and vortex dynamics in Ni doped iron-pnictide BaFe{1.82}Ni_{0.18}As_2
• Anisotropy of the coherence length from critical currents in the stoichiometric superconductor LiFeAs
• Vortex phases and glassy dynamics in the highly anisotropic superconductor HgBa${}_2$CuO${}_{4+\delta }$
• Magnetic field - dependent Labusch parameter in LiFeAs superconductor from Campbell penetration depth
• Anomalous superconducting state in LiFeAs implied by the ${}^{75}$As Knight shift measurement
• Anomalous hysteresis as an evidence for a magnetic field-induced chiral superconducting state in LiFeAs
• Anomalous second magnetization peak in 12442-type RbCa${}_2$Fe${}_4$As${}_4$F${}_2$ superconductors
• Doping Dependence of the Second Magnetization Peak, Critical Current Density and Pinning Mechanism in BaFe${}_{2-x}$Ni${}_x$As${}_2$ Pnictide Superconductors
• Study of the second magnetization peak and the pinning behaviour in Ba(Fe${}_{0.935}$Co${}_{0.065}$)${}_2$As$_2
• Experimental observation of an anomalous peak in isofield M(T) curves in BaFe${}_2$(As${}_{1-x}$P${}_x$)${}_2$ resembling the fish-tail in $M$($H$) curves further suggesting a possible phase transition in the irreversible regime
• Structural Transitions in Vortex Systems with Anisotropic Interactions
• Vortex dynamics and second magnetization peak in PrFeAsO${}_{0.60}$F${}_{0.12}$ superconductor
• Doping dependence of the upper critical field, superconducting current density and thermally activated flux flow activation energy in polycrystalline CeFeAsO1-xFx superconductors
• Vortex dynamics and second magnetization peak in the iron-pnictide superconductor Ca${}_{0.82}$La${}_{0.18}$Fe${}_{0.96}$Ni${}_{0.04}$As${}_2$
• Vortex dynamics as a function of field orientation in BaFe1.9Ni0.1As2
• SANS Study of Vortex Lattice Structural Transition in Optimally Doped (Ba${}_{1-x}$K${}_x$)Fe${}_2$As${}_2$
• Second magnetization peak, anomalous field penetration, and Josephson vortices in KCa${}_2$Fe${}_4$As${}_4$F${}_2$ bilayer pnictide superconductor