290 citations · 887 across the 19 of their papers we have counts for
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Phase dynamics after connection of two separate Bose-Einstein condensates
I. Zapata, F. Sols, A. J. Leggett
We study the dynamics of the relative phase following the connection of two independently formed Bose-Einstein condensates. Dissipation is assumed to be due to the creation of quas…
Josephson effect between trapped Bose-Einstein condensates
Ivar Zapata, Fernando Sols, Anthony J. Leggett
We study the Josephson effect between atomic Bose-Einstein condensates. By drawing on an electrostatic analogy, we derive a semiclassical functional expression for the three-dimens…
Voltage rectification by a SQUID ratchet
Ivar Zapata, Roland Bartussek, Fernando Sols +1
We argue that the phase across an asymmetric dc SQUID threaded by a magnetic flux can experience an effective ratchet (periodic and asymmetric) potential. Under an external ac curr…
Supercurrent flow through an effective double barrier structure
I. Zapata, F. Sols
Supercurrent flow is studied in a structure that in the Ginzburg-Landau regime can be described in terms of an effective double barrier potential. In the limit of strongly reflecti…