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Angular momentum blockade in nanoscale high-T-c superconducting grains
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Royal Institute of Technology.
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). Los Alamos National Laboratory United States Department of Energy (DOE) .
2013 (English)In: Superconductors Science and Technology, ISSN 0953-2048, E-ISSN 1361-6668, Vol. 26, no 12, 125014- p.Article in journal (Refereed) Published
Abstract [en]

We discuss the angular momentum blockade in small d-wave superconducting grains in an external field. We find that abrupt changes in the angular momentum state of the condensate, angular momentum blockade, occur as a result of changes in the angular momentum of the condensate in an external magnetic field. The effect represents a direct analogy with the Coulomb blockade. We use the Ginzburg-Landau formalism to illustrate how a magnetic field induces a deviation from the d-wave symmetry which is described by a (d(x2-y2)+id(xy))-order parameter. We derive the behavior of the volume magnetic susceptibility as a function of the magnetic field, and corresponding magnetization jumps at critical values of the field that should be experimentally observable in superconducting grains.

Place, publisher, year, edition, pages
2013. Vol. 26, no 12, 125014- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-98082DOI: 10.1088/0953-2048/26/12/125014ISI: 000327447200017OAI: oai:DiVA.org:su-98082DiVA: diva2:682513
Funder
Swedish Research Council, 621-2012-298Swedish Research Council, 621-2012-3984
Note

AuthorCount:4;

Available from: 2013-12-27 Created: 2013-12-27 Last updated: 2017-12-06Bibliographically approved

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