Interdimensional universality of dynamic interfaces

Kab-Jin Kim, Jae-Chul Lee, Sung-Min Ahn, Kang-Soo Lee, Chang-Won Lee, Young Jin Cho, Sunae Seo, Kyung-Ho Shin, Sug-Bong Choe () and Hyun-Woo Lee ()
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Kab-Jin Kim: Center for Subwavelength Optics and School of Physics and Astronomy, Seoul National University
Jae-Chul Lee: Center for Subwavelength Optics and School of Physics and Astronomy, Seoul National University
Sung-Min Ahn: Center for Subwavelength Optics and School of Physics and Astronomy, Seoul National University
Kang-Soo Lee: Center for Subwavelength Optics and School of Physics and Astronomy, Seoul National University
Chang-Won Lee: Samsung Advanced Institute of Technology
Young Jin Cho: Samsung Advanced Institute of Technology
Sunae Seo: Samsung Advanced Institute of Technology
Kyung-Ho Shin: Center for Spintronics Research, Korea Institute of Science and Technology
Sug-Bong Choe: Center for Subwavelength Optics and School of Physics and Astronomy, Seoul National University
Hyun-Woo Lee: Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Korea

Nature, 2009, vol. 458, issue 7239, 740-742

Abstract: Scaling down Many diverse dissimilar systems in nature exhibit surprisingly similar behaviours at the level of scaling laws — from earthquakes and stock markets to the inflating lung and vortices in superconductors. This universality is predicted to depend only on system dimensions, irrespective of microscopic details. Experimental verification of this principle is very rare, especially for one-dimensional systems. But Kab-Jin Kim et al. now demonstrate that in ferromagnetic nanowires, the dynamics of the magnetic domain wall are universal even when the system changes from a two- to a one-dimensional regime. One-dimensional critical behaviour was observed in wire structures narrower than a few hundred nanometres, corresponding to the scale of modern nanodevices.

Date: 2009
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DOI: 10.1038/nature07874

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