560 citations · 1.2k across the 6 of their papers we have counts for
6 papers
Upper critical fields and thermally-activated transport of Nd(O_0.7F_0.3)FeAs single crystal
J. Jaroszynski, F. Hunte, L. Balicas +9
We present measurements of the resistivity and the upper critical field H_c2 of Nd(O_0.7F_0.3)FeAs single crystals in strong DC and pulsed magnetic fields up to 45 T and 60 T, resp…
Evidence for two distinct scales of current flow in polycrystalline Sm and Nd iron oxypnictides
A. Yamamoto, A. A. Polyanskii, J. Jiang +13
Early studies have found quasi-reversible magnetization curves in polycrystalline bulk rare-earth iron oxypnictides that suggest either wide-spread obstacles to intergranular curre…
Evidence for electromagnetic granularity in the polycrystalline iron-based superconductor LaO0.89F0.11FeAs
A. Yamamoto, J. Jiang, C. Tarantini +13
The new rare-earth arsenate superconductors are layered, low carrier density compounds with many similarities to the high-Tc cuprates. An important question is whether they also ex…
Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
F. Hunte, J. Jaroszynski, A. Gurevich +7
The ongoing search for new superconductors has recently yielded a new family of oxypnictides composed of alternating La_2O_{2-x}F_x and Fe_2As_2 layers [1-4] with transition temper…
Electromagnetic, atomic-structure and chemistry changes induced by Ca-doping of low-angle grain boundaries
Xueyan Song, George Daniels, D. Matt Feldmann +2
Practical high temperature superconductors must be textured to minimize the reduction of the critical current density at misoriented grain boundaries. Partial substitution…
MgB2 Energy Gap Determination by Scanning Tunneling Spectroscopy
T. W. Heitmann, S. D. Bu, D. M. Kim +13
We report scanning tunneling spectroscopy (STS) measurements of the gap properties of both ceramic MgB2 and c-axis oriented epitaxial MgB2 thin films. Both show a temperature depen…