{ "id": "1811.10329", "version": "v1", "published": "2018-11-26T12:40:58.000Z", "updated": "2018-11-26T12:40:58.000Z", "title": "Universal dimensional crossover of domain wall dynamics in ferromagnetic films", "authors": [ "W. Savero Torres", "R. Diaz Pardo", "S. Bustingorry", "A. B. Kolton", "A. LemaƮtre", "V. Jeudy" ], "categories": [ "cond-mat.stat-mech" ], "abstract": "The magnetic domain wall motion driven by a magnetic field is studied in (Ga,Mn)As and (Ga,Mn)(As,P) films of different thicknesses. In the thermally activated creep regime, a kink in the velocity curves and a jump of the roughness exponent evidence a dimensional crossover in the domain wall dynamics. The measured values of the roughness exponent zeta_{1d} = 0.62 +/- 0.02 and zeta_{2d} = 0.45 +/- 0.04 are compatible with theoretical predictions for the motion of elastic line (d = 1) and surface (d = 2) in two and three dimensional media, respectively.", "revisions": [ { "version": "v1", "updated": "2018-11-26T12:40:58.000Z" } ], "analyses": { "keywords": [ "domain wall dynamics", "universal dimensional crossover", "ferromagnetic films", "magnetic domain wall motion driven", "roughness exponent" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }