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Tunable transport in magnetically coupled MoGe/Permalloy hybrids

Appl. Phys. Lett. 93, 072510 (2008); doi:10.1063/1.2966156

Published 22 August 2008

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A. Belkin,1,2 V. Novosad,1 M. Iavarone,1 J. Fedor,1 J. E. Pearson,1 A. Petrean-Troncalli,3 and G. Karapetrov1
1Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
2Physics Division, Illinois Institute of Technology, Chicago, Illinois 60616, USA
3Physics Department, Austin College, Sherman, Texas 75090, USA
We demonstrate controlled magnetotransport anisotropy of magnetically coupled superconductor-ferromagnet MoGe/Permalloy hybrids. The rotatable anisotropy Permalloy ferromagnet with stripe domain structure induces in-plane anisotropy in superconducting order parameter. We show that near the superconductor-normal state phase boundary the superconductivity in MoGe is localized in narrow mesoscopic channels just above the magnetic domain walls. Changing the in-plane direction of magnetic stripe domains it is possible to reconfigure the direction of the superconducting channels and controllably rotate the direction of the in-plane anisotropy axis in the superconductor. ©2008 American Institute of Physics
History: Received 7 May 2008; accepted 1 July 2008; published 22 August 2008
Permalink: http://link.aip.org/link/?APPLAB/93/072510/1
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KEYWORDS and PACS

Keywords
PACS
  • 74.25.Fy
    Transport properties of superconductors
  • 74.25.Ha
    Magnetic properties of superconductors
  • 75.47.-m
    Magnetotransport phenomena; materials for magnetotransport
  • 74.78.Na
    Superconducting mesoscopic and nanoscale systems
  • 75.60.Ch
    Magnetic domain walls and domain structure
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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