J. Phys. I France
Volume 7, Numéro 10, October 1997
Page(s) 1175 - 1179
J. Phys. I France 7 (1997) 1175-1179
DOI: 10.1051/jp1:1997211

Magnetic field induced charging effects in Josephson junction arrays

S. Sergeenkov

Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, Brazil

(Received 28 May 1997, revised 17 July 1997, accepted 24 July 1997)

A magnetic field induced electric polarization (analog of magnetoelectric effect) and the corresponding change of an effective junction capacitance are considered within a 3D model of disordered Josephson junction arrays. At some threshold field (near the Josephson network critical field), the effective junction charge and the related capacitance are shown to reach a maximum and to change a sign, respectively. A possibility to observe the predicted effects in artificially prepared arrays of superconducting grains is discussed.

© Les Editions de Physique 1997

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