312 citations · 5.8k across the 176 of their papers we have counts for
4 papers · 1 filter
BCS theory for finite size superconductors
Antonio M. Garcia-Garcia, Juan D. Urbina, Emil A. Yuzbashyan +2
We study finite size effects in superconducting metallic grains and determine the BCS order parameter and the low energy excitation spectrum in terms of size, and shape of the grai…
Spin currents in rough graphene nanoribbons: Universal fluctuations and spin injection
M. Wimmer, I. Adagideli, S. Berber +2
We investigate spin conductance in zigzag graphene nanoribbons and propose a spin injection mechanism based only on graphitic nanostructures. We find that nanoribbons with atomical…
Nonlinear transport of Bose-Einstein condensates through mesoscopic waveguides
Tobias Paul, Michael Hartung, Klaus Richter +1
We study the coherent flow of interacting Bose-condensed atoms in mesoscopic waveguide geometries. Analytical and numerical methods, based on the mean-field description of the cond…
Zeeman ratchets: pure spin current generation in mesoscopic conductors with non-uniform magnetic fields
Matthias Scheid, Dario Bercioux, Klaus Richter
We consider the possibility to employ a quantum wire realized in a two-dimensional electron gas (2DEG) as a spin ratchet. We show that a net spin current without accompanying net c…