منابع مشابه
Josephson junction ratchet: The impact of finite capacitances
Jakub Spiechowicz,1 Peter Hänggi,2,3 and Jerzy Łuczka1,4 1Institute of Physics, University of Silesia, 40-007 Katowice, Poland 2Institute of Physics, University of Augsburg, D-86135 Augsburg, Germany 3Nanosystems Initiative Munich, Schellingstrasse 4, D-80799 München, Germany 4Silesian Center for Education and Interdisciplinary Research, University of Silesia, 41-500 Chorzów, Poland (Received 1...
متن کاملRatchet Potential for Fluxons in Josephson - junction Ar - rays
– We propose a simple configuration of a one-dimensional parallel array of Josephsonjunctions in which the pinning potential for trapped fluxons lacks inversion symmetry (ratchet potential). This system can be modelised by a set of non-linear pendula with alternating lenghts and asymmetric harmonic couplings. We show, by molecular dynamics simulation, that fluxons behave as single particles in ...
متن کاملAsymmetric long josephson junction acting as a ratchet for a quantum field.
We study the escape rate of flux quanta in a long Josephson junction having an asymmetric spatial inhomogeneous critical current density. Such a junction can behave as a ratchet when driven by an ac current in the presence of a magnetic field. This rectification gives rise to a dc voltage V(dc) across the junction. The usual approach of particlelike tunneling cannot describe this rectification,...
متن کاملVortex motion rectification in Josephson junction arrays with a ratchet potential.
By means of electrical transport measurements we have studied the rectified motion of vortices in ratchet potentials engineered on overdamped Josephson junction arrays. The rectified voltage as a function of the vortex density shows a maximum efficiency close a matching condition to the period of the ratchet potential indicating a collective vortex motion. Vortex current reversals were detected...
متن کاملDrift ratchet
We consider a silicon wafer, pierced by millions of identical pores with periodically varying diameters but without spatial inversion symmetry (ratchet profile). When a liquid is periodically pumped back and forth through the pores, our theory predicts a net transport of suspended micrometer-sized particles (drift ratchet). The direction of this particle current depends very sensitively on the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 2016
ISSN: 2470-0045,2470-0053
DOI: 10.1103/physreve.94.042202