Directed transport in periodically rocked random sawtooth potentials.
We study directed transport of overdamped particles in a periodically rocked random sawtooth potential. Two transport regimes can be identified which are characterized by a nonzero value of the average velocity of particles and a zero value, respectively. The properties of directed transport in these regimes are investigated both analytically and numerically in terms of a random sawtooth potential and a periodically varying driving force. Precise conditions for the occurrence of transition between these two transport regimes are derived and analyzed in detail.
Denisov
S I
SI
Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Strasse 38, D-01187 Dresden, Germany. stdenis@pks.mpg.de
Lyutyy
T V
TV
Denisova
E S
ES
Hänggi
P
P
Kantz
H
H