Fluxon ratchet potentials in superconducting circuits |
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| Authors: | F. Falo P.J. Martínez J.J. Mazo T.P. Orlando K. Segall E. Trías |
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| Affiliation: | (1) Departamento de Física de la Materia Condensada and ICMA, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain, ES;(2) Departamento de Física Aplicada and ICMA, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain, ES;(3) Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, US |
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| Abstract: | ![]()
A fluxon in a Josephson-junction parallel array behaves like a single particle in a periodic pinning potential. Different configurations of critical currents and cell areas result in different profiles for the fluxon potential. We analyze the minimal conditions to achieve an effective potential in which mirror symmetry is absent, namely a fluxon ratchet potential. Following one of the configurations, we designed circular arrays and probed some of the fluxon properties. Theoretical predictions are nicely fulfilled by the experiments. Received: 20 October 2001 / Accepted: 14 January 2002 / Published online: 22 April 2002 |
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| Keywords: | PACS: 05.40-a 74.50+r 85.25Na |
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