Synthesis, anisotropy, and superconducting properties of LiFeAs single crystal

Abstract

A LiFeAs single crystal with $T_c^{onset}$$\sim$19.7 K was grown successfully in a sealed tungsten crucible using the Bridgeman method. The electrical resistivity experiments revealed a ratio of room temperature to residual resistivity (RRR) of approximately 46 and 18 for the in-plane and out-of plane directions. The estimated anisotropic resistivity, ${\gamma }_{\rho }$=${\rho }_c$ / ${\rho }_{ab}$, was approximately 3.3 at $T_c^{onset}$. The upper critical fields had large $H_{c2}^{\parallel ab}$ and $H_{c2}^{\parallel c}$ values of 83.4 T and 72.5 T, respectively, and an anisotropy ratio is ${\gamma }_H$=$H_{c2}^{\parallel ab}$ / $H_{c2}^{\parallel c}$$\sim$1.15. The high upper critical field value and small anisotropy highlight the potential use of LiFeAs in a variety of applications. The calculated critical current density $(J_c)$ from the $M$-$H$ loop is approximately 10${}^3$ A/cm${}^2$

4 pages, 4 figures

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Cited by in corpus (13)

• The upper critical field and its anisotropy in LiFeAs
• Multiorbital effects on the transport and the superconducting fluctuations in LiFeAs
• Small anisotropy of the lower critical field and $s_{\pm }$-wave two-gap feature in single crystal LiFeAs
• Single crystal growth and superconducting properties of LiFeAs
• Similar zone-center gaps in the low-energy spin-wave spectra of NaFeAs and BaFe2As2
• Molecular Beam Epitaxy Growth of Superconducting LiFeAs Film on SrTiO3(001) Substrate
• Calorimetric Evidence for Nodes in the Overdoped Ba(Fe${}_{0.9}$Co${}_{0.1}$)${}_2$As${}_2$
• Superconducting properties and pseudogap from preformed Cooper pairs in the triclinic (CaFe${}_{1-x}$Pt${}_x$As)${}_{10}$Pt${}_3$As${}_8$
• Comparative study of superconducting and normal-state anisotropy in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$ superconductors with controlled amounts of interstitial excess Fe
• Pseudogap and Strong Pairing Induced by Incipient and Shallow Bands in the Quasi-Two-Dimensional KCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Absence of hexagonal to square structural transition in LiFeAs vortex matter
• High-pressure self-flux growth and characterization of Li-deficient Li0.95FeAs single crystals
• Electronic layer decoupling driven by density-wave order in La${}_4$Ni${}_3$O${}_{10}$