Flux-flow critical-state susceptibility of superconductors
Chen, Du-Xing (Universitat Autònoma de Barcelona. Departament de Física)
Sánchez Moreno, Álvaro (Universitat Autònoma de Barcelona. Departament de Física)
Pardo Vivé, Enric (Slovak Academy of Sciences. Institute of Electrical Engineering)
American Physical Society

Date:	2005
Abstract:	The field-amplitude Hm and circular frequency ω dependent ac susceptibility, χ=χ'−jχ'', of a hard superconducting cylinder with flux-flow type current-voltage characteristic is calculated. A remarkable feature of the resultant χ(Hm,ω) is that both the maximum χ'', χ''m, and dlgHm(χ''m)/dlgω increase with increasing ω. This behavior is observed in actual Bi-2223/Ag tapes and YBa2Cu3O7−δ-coated conductors. Our result provides a useful tool to study the intergranular critical state in high-temperature superconductors.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Conductors ; Josephson junctions ; Superconductors ; High temperature superconductors ; Josephson effect ; Critical currents ; Demagnetization ; High temperature superconductivity ; Rotating flows ; Superconductivity models
Published in:	Applied physics letters, Vol. 86, Issue 24 (June 2005) , p. 242503/1-242503/3, ISSN 1077-3118

DOI: 10.1063/1.1947370

4 p, 246.1 KB

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