Regensburg 2004 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

TT: Tiefe Temperaturen

TT 8: Postersitzung I: Supraleitung

TT 8.20: Poster

Montag, 8. März 2004, 14:30–19:00, Poster A

Andreev reflection and nonequilibrium Josephson effect in (quasi)ballistic S-N-S junctions — •Dmitri Ryndyk — Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg

Josephson effect in mesoscopic S-N-S junctions is possible due to the phase coherent Andreev reflection even in the absence of a pairing interaction inside normal region. Recently both stationary and nonstationary Josephson effects were investigated experimentally in ballistic (or close to ballistic) structures, and a number of expected as well as unexpected features were observed. We consider the theory in the case of ballistic and quasiballistic normal regions. Both stationary and nonstationary Josephson effects are very sensitive to nonequilibrium effects in a normal channel.