Lower Critical Field, Anisotropy, and Two-Gap Features of LiFeAs

Abstract

The magnetic properties of LiFeAs, as single crystalline and polycrystalline samples, were investigated. The lower critical field deduced from the vortex penetration of two single crystals appears to be almost isotropic with a temperature dependence closer to that of two-gap superconductors. The parameters extracted from the reversible magnetizations of sintered polycrystalline samples are in good agreement with those from the single crystal data.

arXiv comment19 pages, 5 figures

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Cited by in corpus (18)

• Superconductivity in Iron Compounds
• Functional Renormalization Group for multi-orbital Fermi Surface Instabilities
• Pauli-limiting effects in the upper critical fields of a clean LiFeAs single crystal
• Crossover from weak to strong pairing in unconventional superconductors
• Temperature dependence of lower critical field Hc1(T) shows nodeless superconductivity in FeSe
• Weak superconducting pairing and a single isotropic energy gap in stoichiometric LiFeAs
• The superconducting gaps in LiFeAs: Joint study of specific heat and ARPES
• Evidence for multiple gaps in specific heat of LiFeAs crystals
• Small anisotropy of the lower critical field and $s_{\pm }$-wave two-gap feature in single crystal LiFeAs
• Isotropic three-dimensional gap in the iron-arsenide superconductor LiFeAs from directional heat transport measurements
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• Nodeless superconductivity in the presence of spin-density wave in pnictide superconductors: The case of BaFe${}_{2-x}$Ni${}_x$As${}_2$
• Anisotropy of the coherence length from critical currents in the stoichiometric superconductor LiFeAs
• Doping dependent evolution of magnetism and superconductivity in Eu1-xKxFe2As2 (x = 0-1) and temperature dependence of lower critical field Hc1
• Electron and Superconducting Properties of the AFeAs (A= Li, Na) Family Alkali-Metal Pnictides: Current Stage of the Research (mini-review)
• Investigation of LiFeAs by means of "Break-junction" Technique
• Optical properties of iron-based superconductor LiFeAs single crystal
• Probing the Order Parameter of Superconducting LiFeAs using Pb/LiFeAs and Au/LiFeAs Point-Contact Spectroscopy