Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/15016
ชื่อเรื่อง: Upper critical fields of ferromagnet/superconductor layered structures
ผู้แต่ง: Krunavakarn B.
Yoksan S.
Keywords: Critical current density (superconductivity)
Ferromagnetic materials
Ferromagnetism
Oscillations
Superconducting transition temperature
Boundary resistivity
Proximity effect
Zero temperature
Superconductivity
วันที่เผยแพร่: 2006
บทคัดย่อ: The temperature dependence of the upper critical fields, both perpendicular Hc2⊥ and parallel Hc2∥ to layer planes of ferromagnet/superconductor bi- and multilayers, is theoretically investigated. The secular equation of the superconducting order parameter for determining the phase diagram (H, T) is obtained by solving exactly the linearized Usadel equations in the multimode method taking into account the material parameter values. For the bilayers system, the influence of the boundary resistivity on the critical fields, and the dimensional crossover behavior of Hc2∥(T) are studied in details. For the multilayered structure, the effects of the π-phase state on both the superconducting transition temperature Tc and the upper critical fields (Hc2⊥, and Hc2∥) are also considered. The nonmonotonic Tc behaviors are predicted. The interplay between 0- and π-phases leading to the strong oscillations of Tc as well as the temperature dependence of the zero temperature critical fields on the ferromagnetic layer thickness are investigated theoretically. © 2006 Elsevier B.V. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/15016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646927791&doi=10.1016%2fj.physc.2006.03.036&partnerID=40&md5=4884e0cec9c688255571627b79fb261a
ISSN: 9214534
Appears in Collections:Scopus 1983-2021

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