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Spontaneous surface flux pattern in chiral p-wave superconductors
Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland..
2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 97, no 6, article id 064510Article in journal (Refereed) Published
Abstract [en]

In chiral p-wave superconductors, magnetic flux patterns may appear spontaneously when translational symmetry is broken such as at surfaces, domain walls, or impurities. However, in the candidate material Sr2RuO4 no direct signs of such magnetic fields have been detected experimentally. In this paper, the flux pattern at the edge of a disk-shaped sample is examined using the phenomenological Ginzburg-Landau approach. The detailed shape of the flux pattern, including self-screening, is computed numerically for different surface types by systematically scanning a range of boundary conditions. Moreover, specific features of the electronic structure are included qualitatively through the coefficients in the Ginzburg-Landau functional. Both the shape and the magnitude of the flux pattern are found to be highly sensitive to all considered parameters. In conclusion, such spontaneous magnetic flux patterns are not a universal feature of chiral p-wave superconductors.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 97, no 6, article id 064510
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-348105DOI: 10.1103/PhysRevB.97.064510ISI: 000424967100005OAI: oai:DiVA.org:uu-348105DiVA, id: diva2:1196864
Available from: 2018-04-11 Created: 2018-04-11 Last updated: 2018-04-11Bibliographically approved

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