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          Institute: MPI für Physik Komplexer Systeme     Collection: Superconductivity and magnetism     Display Documents



ID: 479366.0, MPI für Physik Komplexer Systeme / Superconductivity and magnetism
Giant persistent currents in the open Aharonov-Bohni rings
Authors:Yi, J.; Wei, J. H.; Hong, J. B.; Lee, S. I.
Language:English
Date of Publication (YYYY-MM-DD):2002-01-15
Title of Journal:Physical Review B
Journal Abbrev.:Phys. Rev. B
Volume:650
Issue / Number:3
Sequence Number of Article:033305
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We investigate persistent currents in the Aharonov-Bohm rings coupled to external leads. For a contacted double-ring structure, it is found that the flux-independent perfect transmission occurs at kl = pi/2, where k is the wave number and l the half length of a single ring. The flux-independent perfect reflection occurs at kl = 0. These repeat with period pi in kl. There are singular points in the flux at f = 1/2 for the flux-independent perfect transmission where f means the ratio of a flux to the flux quantum and at f = 0 for the reflection, These repeat with period 1 in f. A giant persistent current is generated whenever kl approaches these singular points.
External Publication Status:published
Document Type:Article
Communicated by:Heidrun Näther
Affiliations:MPI für Physik Komplexer Systeme/Visitors Program
External Affiliations:Pohang Univ Sci & Technol, Dept Phys, Natl Creat Res Initiat; Ctr Superconduct, Pohang 790784, South Korea; Pohang Univ Sci & Technol, Dept Phys, Natl Creat Res Initiat Ctr Superconduct, Pohang 790784, South Korea; Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany; Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea; Seoul Natl Univ, Ctr Strongly Correlated Mat Res, Seoul 151742, South Korea
Identifiers:ISI:000173448900012
ISSN:0163-1829
URL:http://ojps.aip.org/getabs/servlet/GetabsServlet?p...
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