Disorder effects on the superconducting properties of BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$ single crystals

Abstract

Single crystals of superconducting BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$ were exposed to neutron irradiation in a fission reactor. The introduced defects decrease the superconducting transition temperature (by about 0.3 K) and the upper critical field anisotropy (e.g. from 2.8 to 2.5 at 22 K) and enhance the critical current densities by a factor of up to about 3. These changes are discussed in the context of similar experiments on other superconducting materials.

References in corpus (8)

• Superconductivity at 22 K in Co-doped BaFe2As2 Crystals
• Effects of Co substitution on thermodynamic and transport properties and anisotropic $H_{c2}$ in Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ single crystals
• Small anisotropy, weak thermal fluctuations, and high field superconductivity in Co-doped iron pnictide Ba(Fe1-xCox)2As2
• Scanning Tunneling Spectroscopy and Vortex Imaging in the Iron-Pnictide Superconductor BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$
• Anisotropy of the Optimally-Doped Iron Pnictide Superconductor Ba(Fe0.926Co0.074)2As2
• Superfluid density of the $\pm$s-wave state for the iron-based superconductors
• Intraband versus interband scattering rate effects in neutron irradiated MgB2
• Neutron Irradiation of Sm-1111

Cited by in corpus (8)

• New Fe-based superconductors: properties relevant for applications
• Scaling behaviour of the critical current in clean epitaxial Ba(Fe1-xCox)2As2 thin films
• Magneto-optical study of Ba(Fe${}_{1-x}$T${}_x$)${}_2$As${}_2$ (T=Co, Ni) single crystals irradiated with heavy-ions
• Anisotropic critical currents in FeSe0.5Te0.5 films and the influence of neutron irradiation
• Disorder effects and current percolation in FeAs based superconductors
• Superconductivity in iron silicide Lu2Fe3Si5 probed by radiation-induced disordering
• Critical current anisotropy in Nd-1111 single crystals and the infuence of neutron irradiation
• Disorder Induced Effects on the Critical Current Density of Iron Pnictide BaFe_1.8 Co_0.2 As_2 single crystals