Kim, Kab-Jin Lee, Jae-Chul Ahn, Sung-Min Lee, Kang-Soo Lee, Chang-Won Cho, Young Jin Seo, Sunae Shin, Kyung-Ho Choe, Sug-Bong Lee, Hyun-Woo 2024-01-20T21:33:25Z 2024-01-20T21:33:25Z 2021-09-01 2009-04-09 0028-0836 https://pubs.kist.re.kr/handle/201004/132573 Despite the complexity and diversity of nature, there exists universality in the form of critical scaling laws among various dissimilar systems and processes such as stock markets(1), earthquakes(2), crackling noise(3), lung inflation(4) and vortices in superconductors(5). This universality is mainly independent of the microscopic details, depending only on the symmetry and dimension of the system. Exploring how universality is affected by the system dimensions is an important unresolved problem. Here we demonstrate experimentally that universality persists even at a dimensionality crossover in ferromagnetic nanowires. As the wire width decreases, the magnetic domain wall dynamics changes from elastic creep(6-9) in two dimensions to a particle-like stochastic behaviour(10) in one dimension. Applying finite-size scaling, we find that all our experimental data in one and two dimensions (including the crossover regime) collapse onto a single curve, signalling universality at the criticality transition. The crossover to the one-dimensional regime occurs at a few hundred nanometres, corresponding to the integration scale for modern nanodevices. English NATURE PUBLISHING GROUP MAGNETIZATION REVERSAL DOMAIN-WALL CRITICALITY CREEP AVALANCHES BEHAVIOR FILMS Interdimensional universality of dynamic interfaces Article 10.1038/nature07874 1 NATURE, v.458, no.7239, pp.740 - 742 NATURE 458 7239 740 742 scie scopus 000265193600035 2-s2.0-64749116376 Multidisciplinary Sciences Science & Technology - Other Topics Article MAGNETIZATION REVERSAL DOMAIN-WALL CRITICALITY CREEP AVALANCHES BEHAVIOR FILMS domain wall ferromagnetic nanowire