Anisotropic Transport Properties of Ferromagnetic-Superconducting Bilayers

Details Anisotropic Transport Properties of Ferromagnetic-Superconducting Bilayers Anisotropic Transport Properties of Ferromagnetic-Superconducting Bilayers

2003-03-27

arxiv.org/abs/cond-mat/0303570v1

Phys. Rev. B 69, 132501 (2004)

Physics

Condensed Matter

Superconductivity

4 pages, 2figures, Submitted to PRL

Scientific paper

10.1103/PhysRevB.69.132501

We study the transport properties of vortex matter in a superconducting thin film separated by a thin insulator layer from a ferromagnetic layer. We assume an alternating stripe structure for both FM and SC layers as found in [7]. We calculate the periodic pinning force in the stripe structure resulting from a highly inhomogeneous distribution of the vortices and antivortices. We show that the transport properties in FM-SC bilayer are highly anisotropic. In the absence of random pinning it displays a finite resistance for the current perpendicular to stripes and is superconducting for the current parallel to stripes. The average vortex velocity, electric field due to the vortex motion, Josephson frequency and higher harmonics of the vortex oscillatory motion are calculated.

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