6 papers
Josephson Current Counterflow in Atomic Bose-Einstein Condensates
E. Sakellari, N. P. Proukakis, M. Leadbeater +1
Josephson weak links in superconductors can be engineered such that the phase difference across the junction is (-junction),leading to the reversal of the current. The condi…
Decay of superfluid turbulence via Kelvin wave radiation and vortex reconnections
M. Leadbeater, D. C. Samuels, C. F. Barenghi +1
The elementary processes involved in the decay of superfluid turbulence in the limit of low temperature are studied by numerical simulations of vortex ring collisions. We find that…
Semiclassical Theory of Integrable and Rough Andreev Billiards
W. Ihra, M. Leadbeater, J. L. Vega +1
We study the effect on the density of states in mesoscopic ballistic billiards to which a superconducting lead is attached. The expression for the density of states is derived in t…
Lévy flights in quantum transport in quasi-ballistic wires
M. Leadbeater, V. I. Falko, C. J. Lambert
Conductance fluctuations, localization and statistics of Lyapunov exponents are studied numerically in pure metallic wires with rough boundaries (quasi-ballistic wires). We find th…
Large-scale superconductivity-induced conductance suppression in mesoscopic normal-superconducting structures
R. Seviour, C. J. Lambert, M. Leadbeater
Experiments on hybrid superconducting normal-metal structures have revealed that even in the absence of tunnel junctions the onset of superconductivity can lead to a decrease in th…
Resonant Andreev Scattering In Phase-Coherent, Superconducting Nanostructures
N. R. Claughton, M. Leadbeater, C. J. Lambert +1
Analytic predictions for resonant transport in three generic structures are presented. For a structure comprising a normal (N) contact - normal dot (NDOT) - superconducting (S) con…