The internal magnetic field in superconducting ferromagnets

Abstract

We have measured the nonlinear response to the ac magnetic field in the superconducting weak ferromagnet Ru-1222, at different regimes of sample cooling which provides unambiguous evidence of the interplay of the domain structure and the vorticity in the superconducting state. This is {\em direct} proof of coexistence of ferromagnetic and superconductive order parameters in high-$T_c$ ruthenocuprates.

9 pages, 6 figures

References in corpus (4)

• Spin Glass Behavior in RuSr2Gd1.5Ce0.5Cu2O10
• Domain structure of superconducting ferromagnets
• Magnetic Transitions and Ferromagnetic Clusters in RuSr2(Eu,Ce)2Cu2O10+d
• Magnetism and Superconductivity in RuM1.5Ce0.5Sr2Cu2O10 (M=Eu and Y)

Cited by in corpus (4)

• The Ruthenocuprates - Natural Superconductor-Ferromagnet Multilayers
• Transport, thermal and magnetic properties of RuSr_2(Gd_{1.5}Ce_{0.5})Cu_2O_{10-δ}, a magnetic superconductor
• Nonlinear magnetic response in ruthenocuprates
• Cryptoferromagnetism in Superconductors with Broken Time-Reversal Symmetry