Aharonov-Bohm–type effect for vortices in Josephson-junction arrays | Zendy

B. J. van Wees | Zendy

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Aharonov-Bohm–type effect for vortices in Josephson-junction arrays

Author(s) -

B. J. van Wees

Publication year - 1990

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.65.255

Subject(s) - physics , vortex , josephson effect , condensed matter physics , superconductivity , aharonov–bohm effect , charge (physics) , quantum mechanics , magnetic field , thermodynamics

The dynamics of a single vortex present in a ring-shaped (Corbino geometry) two-dimensional array of low-capacity Josephson junctions is studied. The vortex is treated as a macroscopic quantum particle, whose energy levels En(Q0) are periodic functions of the externally induced gauge charge Q0 which is enclosed by the vortex, with a period 2e. This Aharonov-Bohm–type effect may manifest itself as a persistent voltage Vs = dE0(Q0)/dQ0 between interior and exterior contacts, or alternatively as Bloch oscillations. The relation with the Aharonov-Casher effect and the possibility for experimental observation are discussed

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