Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13988
ชื่อเรื่อง: Ferromagnetic thickness dependence of superconducting transition temperature in a superconductor/ferromagnet bilayer system with an inhomogeneous exchange field
ผู้แต่ง: Booniad W.
Udomsamuthirun P.
Keywords: Eigenvalues and eigenfunctions
Ferromagnetic materials
Ferromagnetism
Condition parameters
Eigenvalues and eigenvectors
Exchange fields
Ferromagnetic layers
Proximity effect parameters
Superconductor/ferromagnet bilayer
Thickness dependence
Usadel equations
Superconducting transition temperature
วันที่เผยแพร่: 2014
บทคัดย่อ: The superconducting transition temperature of superconductor/ferromagnet bilayer with an inhomogeneous exchange field within the framework of the Usadel equations is studied. With the geometry of superconductor/ferromagnet junction on z-axis, the exchange field rotates with constant angle φ respect to the z-axis and with the angle θ, θ = Qy, varying in xy-plane along the direction y that Q is a spiral wave vector. The boundary condition parameter (W0) and corresponding eigenvalues and eigenvectors are shown in analytic forms for two small angle case as measured from the xy-plane and measured from z-axis. The behavior of superconducting transition temperature versus thickness of ferromagnetic layer with varying Qξs, the transparency parameters (γb) an the proximity effect parameter (γ) are considered in our calculations. We can find monotonic, non-monotonic, and reentrant behavior of superconducting transition temperature in our calculation depending on parameters. The non-monotonic behavior is found with low γb, Qξs and the reentrant behavior is found with large γ. © 2014 Elsevier B.V. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13988
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84900501250&doi=10.1016%2fj.physc.2014.04.034&partnerID=40&md5=ddb3576d3ea56436e0732603543516fa
ISSN: 9214534
Appears in Collections:Scopus 1983-2021

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