Volume 36, Number 2, October II 1996
|Page(s)||135 - 140|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Persistent voltage and vortex dynamics in ring-shaped Josephson arrays
Istituto di Fisica, Università di Catania,
viale A. Doria 6, 95129 Catania, Italy
2 Institut für Theoretische Festkörperphysik, Universtität Karlsruhe, 76128 Karlsruhe, Germany
3 Theoretische Physik, ETH-Hönggerberg, CH-8093 Zürich, Switzerland
4 Dipartimento di Scienze Fisiche, Università di Napoli, Mostra d'Oltremare Pad. 19, 80125 Napoli, Italy
5 GNSM (CNR) and INFM, Italy
Accepted: 6 September 1996
We study vortex dynamics in a ring-shaped Josephson-junction array with emphasis on the interaction of the vortex with spinwaves. An offset charge Qx induces a persistent voltage which depends on the ratio of the charging to the Josephson coupling energy as well as on the ratio of the phase coherence length for a vortex to the system size. We determine the temperature dependence of and find an observable persistent voltage at low temperatures.
PACS: 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 72.20.My – Galvanomagnetic and other magnetotransport effects / 73.20.Fz – Weak localization effects (e.g., quantized states)
© EDP Sciences, 1996
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