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Applied Physics Letters / Volume 100 / Issue 15 / MAGNETICS AND SPINTRONICS

Appl. Phys. Lett. 100, 152402 (2012); http://dx.doi.org/10.1063/1.3701782 (3 pages)

Towards precise measurement of oscillatory domain wall by ferromagnetic Josephson junction

Shin’ichi Hikino1, Michiyasu Mori2, Wataru Koshibae3, and Sadamichi Maekawa2

1Computational Condensed Matter Physics Laboratory, RIKEN Advanced Science Institute (ASI), Wako, Saitama 351-0198, Japan
2Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
3Cross-Correlated Materials Research Group (CMRG), RIKEN Advanced Science Institute (ASI), Wako, Saitama 351-0198, Japan

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(Received 1 February 2012; accepted 21 March 2012; published online 10 April 2012)

We theoretically propose a principle for precise measurement of oscillatory domain wall (DW) by a ferromagnetic Josephson junction, which is composed of a ferromagnetic wire with DW and two superconducting electrodes. The current-voltage curve exhibits stepwise structures, only when DW oscillates in the ferromagnetic wire. The voltage step appears at V = n(ℏ/2e)ωDW with the fundamental constant ℏ/e, integer number n, and the DW frequency ωDW. Since V can be determined in the order of 10−9 accuracy, the oscillatory DW will be measured more precisely than present status by conventional method.

© 2012 American Institute of Physics

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KEYWORDS and PACS

Keywords

electrodes, ferromagnetic resonance, Josephson effect, magnetic domain walls

PACS

  • 75.60.Ch

    Domain walls and domain structure

  • 76.50.+g

    Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance

  • 74.50.+r

    Tunneling phenomena; Josephson effects

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3701782

PUBLICATION DATA

ISSN

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

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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