Ratchet effect in dc SQUIDs

S. Weiss; D. Koelle; J. Müller; R. Gross; K. Barthel

doi:10.1209/epl/i2000-00365-x

Ratchet effect in dc SQUIDs

S. Weiss
, D. Koelle
, J. Müller
, R. Gross
, K. Barthel

Universität zu Köln
Forschungszentrum Jülich (FZJ)

Research output: Contribution to journal › Article › peer-review

91 Scopus citations

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.

Original language	English
Pages (from-to)	499-505
Number of pages	7
Journal	Europhysics Letters
Volume	51
Issue number	5
DOIs	https://doi.org/10.1209/epl/i2000-00365-x
State	Published - 1 Sep 2000
Externally published	Yes

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title = "Ratchet effect in dc SQUIDs",

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.",

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T1 - Ratchet effect in dc SQUIDs

AU - Weiss, S.

AU - Koelle, D.

AU - Müller, J.

AU - Gross, R.

AU - Barthel, K.

PY - 2000/9/1

Y1 - 2000/9/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0034257251

U2 - 10.1209/epl/i2000-00365-x

DO - 10.1209/epl/i2000-00365-x

M3 - Article

AN - SCOPUS:0034257251

SN - 0295-5075

VL - 51

SP - 499

EP - 505

JO - Europhysics Letters

JF - Europhysics Letters

IS - 5

ER -

Ratchet effect in dc SQUIDs

Abstract

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