142 citations · 278 across the 9 of their papers we have counts for
13 papers · 1 filter
Interactions between Josephson and pancake vortices revealed by second harmonic Hall measurements
Mauro Tesei, Lesley F Cohen
The dynamic interactions between Josephson and pancake vortices in highly anisotropic superconductors are probed by shaking the former vortices with an ac magnetic field and measur…
Point contact Andreev reflection spectroscopy of NdFeAsO_0.85
K A Yates, L F Cohen, Zhi-An Ren +4
The newly discovered oxypnictide family of superconductors show very high critical temperatures of up to 55K. Whilst there is growing evidence that suggests a nodal order parameter…
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…
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…