https://doi.org/10.1140/epjb/e2003-00342-9
Transport properties of a mesoscopic metallic loop connected to leads
Scuola Internazionale Superiore di Studi Avanzati (SISSA) and
Istituto Nazionale per la Fisica della Materia (INFM) (Unitá
di Ricerca Trieste-SISSA), Via Beirut n. 4, 34013 Trieste, Italy
Corresponding author: a arrachea@mpipks-dresden.mpg.de
Received:
30
May
2003
Revised:
19
September
2003
Published online:
8
December
2003
We study the transport properties of a metallic ring threaded by a magnetic
flux varying linearly in time 
with a constriction and connected to
two external particle reservoirs. This setup contains as limiting cases the experimental arrangements used to define Kubo and Landauer conductances.
We employ a formalism based in Baym-Kadanoff-Keldysh non-equilibrium Green functions to
calculate the conductance of the system and the dissipated power. We compare
the transport behavior in different limits of the geometrical configuration.
PACS: 72.10.Bg – General formulation of transport theory / 73.40.Jn – Metal-to-metal contacts / 73.40.Gk – Tunneling
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
