We report that the (Ba, K) Fe 2 As 2 crystal with T c= 32 K shows a pinning potential, U 0, as
high as 10 4 K, with U 0 showing very little field dependence. The (Ba, K) Fe 2 As 2 single …

Iron-based superconductors have received much attention as a new family of high-
temperature superconductors owing to their unique properties and distinct differences from …

We have investigated the temperature dependence of the upper critical field H c 2 (T) in a
LiFeAs single crystal by direct measurements of resistivity under static magnetic fields up to …

Critical current density was studied in single crystals of Ba (Fe 1− x Co x) 2 As 2 for the
values of x spanning the entire doping phase diagram. A noticeable enhancement was …

We investigated the temperature dependence of the upper critical fields H c 2 (T) of a
superconducting FeTe 0.6 Se 0.4 single crystal by measuring its resistivity in static magnetic …

We have fabricated c-axis Josephson junctions on single crystals of Ba 1-x K x Fe 2 As 2 by
using Pb as the counterelectrode in two geometries, planar and point contact. Junctions in …

A comparative study of the upper critical field H c 2 and second magnetization peak H sp
was performed using high-quality single crystals of hole-doped Ba 0.68 K 0.32 Fe 2 As 2 …

In order to establish the doping dependence of the critical current properties in the iron-
based superconductors, the in-plane critical current density J c of BaF e 2 A s 2-based …

We present resistivity measurements of the complete superconducting upper critical field (H
c 2) phase diagram as a function of angle (θ) and temperature (T) for cobalt-doped SrFe 2 …

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 …