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Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications

Applied Physics A volume 111, pages 369–378 (2013)Cite this article

Abstract

The authors have investigated the possibility of utilizing spin waves for interchip and intrachip communications, and as logic elements using both simulations and experimental techniques. Through simulations it has been shown that the decay lengths of magnetostatic spin waves are affected most by the damping parameter, and least by the exchange stiffness constant. The damping and dispersion properties of spin waves limit the attenuation length to several tens of microns. Thus, we have ruled out the possibility of interchip communication via spin waves. Experimental techniques for the extraction of the dispersion relationship have also been demonstrated, along with experimental demonstrations of spin wave interference for amplitude modulation. The effectiveness of spin wave modulation through interference, along with the capability of determining the spin wave dispersion relationships electrically during the manufacturing and testing phase of chip production, may pave the way for using spin waves in analog computing wherein the circuitry required for performing similar functionality becomes prohibitive.

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Acknowledgements

This work is supported by the Singapore National Research Foundation under CRP Award No. NRF-CRP 4-2008-06 and a Grant-in-Aid for Scientific Research (No. 22760015) from MEXT, Japan.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering and NUSNNI-NanoCore, National University of Singapore, 117576, Singapore, Singapore

    Jae Hyun Kwon, Sankha Subhra Mukherjee, Praveen Deorani & Hyunsoo Yang

  2. National Institute for Materials Science, Tsukuba, 305-0047, Japan

    Masamitsu Hayashi

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  1. Jae Hyun Kwon
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  2. Sankha Subhra Mukherjee
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  3. Praveen Deorani
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  4. Masamitsu Hayashi
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  5. Hyunsoo Yang
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Corresponding author

Correspondence to Hyunsoo Yang.

Additional information

S.S.M. and J.H.K. contributed equally to this work.

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Kwon, J.H., Mukherjee, S.S., Deorani, P. et al. Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications. Appl. Phys. A 111, 369–378 (2013). https://doi.org/10.1007/s00339-012-7542-x

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  • DOI: https://doi.org/10.1007/s00339-012-7542-x

Keywords

  • Wave Packet
  • Spin Wave
  • Bias Field
  • Attenuation Length
  • Dispersion Relationship