142 citations · 214 across the 3 of their papers we have counts for
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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…
Topological Hysteresis in the Intermediate State of Type-I Superconductors
Ruslan Prozorov, Russell W. Giannetta, Anatolii A. Polyanskii +1
Magneto-optical imaging of thick stress-free lead samples reveals two distinct topologies of the intermediate state. Flux tubes are formed upon magnetic field penetration (closed t…
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…
Effects of proton irradiation and ageing on the superconducting properties of single crystalline and polycrystalline MgB2
G. K. Perkins, Y. Bugoslavsky, A . D. Caplin +7
We present magnetisation data on crystalline and polycrystalline MgB2 before and after irradiation with ~1MeV protons. In the virgin crystal the critical current density is below o…