Ratchet effect in dc SQUIDs
- 1 September 2000
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 51 (5) , 499-505
- https://doi.org/10.1209/epl/i2000-00365-x
Abstract
We analyzed voltage rectification for dc SQUIDs biased with ac current with zero mean value. We demonstrate that the reflection symmetry in the 2-dimensional SQUID potential is broken by an applied flux and with appropriate asymmetries in the dc SQUID. Depending on the type of asymmetry, we obtain a rocking or a simultaneously rocking and flashing ratchet, the latter showing multiple sign reversals in the mean voltage with increasing amplitude of the ac current. Our experimental results are in agreement with numerical solutions of the Langevin equations for the asymmetric dc SQUID.Keywords
All Related Versions
This publication has 18 references indexed in Scilit:
- Brownian rectifiers: How to convert brownian motion into directed transportPublished by Springer Nature ,2008
- Ratchet potential for fluxons in Josephson-junction arraysEurophysics Letters, 1999
- Tunneling Center as a Source of Voltage Rectification in Josephson JunctionsPhysical Review Letters, 1998
- Modeling molecular motorsReviews of Modern Physics, 1997
- Thermodynamics and Kinetics of a Brownian MotorScience, 1997
- Voltage Rectification by a SQUID RatchetPhysical Review Letters, 1996
- Optical Thermal RatchetPhysical Review Letters, 1995
- Periodically Rocked Thermal RatchetsEurophysics Letters, 1994
- Directional motion of brownian particles induced by a periodic asymmetric potentialNature, 1994
- Forced thermal ratchetsPhysical Review Letters, 1993