311 citations · 938 across the 16 of their papers we have counts for
15 papers · 1 filter
Effect of columnar defects on the pinning properties of NdFeAsO0.85 conglomerate particles
J. D. Moore, L. F. Cohen, Y. Yeshurun +12
Oxypnictide superconductor NdFeAsO0.85 sample was irradiated with 2 GeV Ta ions at a fluence of 5x10^10 ions/cm2. High resolution transmission electron microscopy study revealed th…
Evidence for Supercurrent Connectivity in Conglomerate Particles in NdFeAsO1-d
J D Moore, K Morrison, K A Yates +11
Here we use global and local magnetometry and Hall probe imaging to investigate the electromagnetic connectivity of the superconducting current path in the oxygen-deficient fluorin…
Mapping the dynamic interactions between vortex species in highly anisotropic superconductors
M. Tesei, G. K. Perkins, A. D. Caplin +2
Here we use highly sensitive magnetisation measurements performed using a Hall probe sensor on single crystals of highly anisotropic high temperature superconductors $Bi_{2}Sr_{2}C…
Dynamic interactions between pancake vortex stacks and Josephson vortices in Bi2Sr2CaCu2O8 single crystals: relaxation and ratchets
G. K. Perkins, A. D. Caplin, L. F. Cohen
We present a detailed study of the dynamic interactions between Josephson vortices and stacks of pancake vortices in a Bi2Sr2CaCu2O8 single crystal, obtained by measuring the effec…
Superconducting gap structure and pinning in disordered MgB2 films
Y. Bugoslavsky, Y. Miyoshi, G. K. Perkins +7
We have performed a comparative study of two thin films of magnesium diboride (MgB2) grown by different techniques. The critical current density at different temperatures and magne…
The effect of magnetic field on the two superconducting gaps in MgB2
Y. Bugoslavsky, Y. Miyoshi, G. K. Perkins +4
Double-gap superconductivity in an epitaxial MgB2 film has been studied by means of point-contact spectroscopy in magnetic field up to 8 Tesla. The relatively fast disappearance of…