Universal Electromotive Force Induced by Domain Wall Motion

TitleUniversal Electromotive Force Induced by Domain Wall Motion
Publication TypeJournal Article
Year of Publication2009
AuthorsYang, SA, Beach, GSD, Knutson, C, Xiao, D, Niu, Q, Tsoi, M, Erskine, JL
JournalPhysical Review Letters
Date Published2009/02/13/

The electromotive force induced by a moving magnetic domain wall in a nanostrip has been calculated theoretically and detected experimentally. It is found that the emf depends only on the domain wall transformation frequency through a universal Josephson type relation, which is closely related to the topological nature of the domain wall. Our experimental measurements confirm the theoretical prediction.