Spinmotive force due to intrinsic energy of ferromagnetic nanowires

Yuta Yamane, Jun'ichi Ieda, Jun Ichiro Ohe, Stewart E. Barnes, Sadamichi Maekawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We study, both analytically and numerically, a spinmotive force arising from the inherent magnetic energy of a domain wall in a wedged ferromagnetic nanowire. In a spatially-nonuniform nanowire, domain walls are subjected to an effective magnetic field, resulting in spontaneous motion of the walls. The spinmotive force mechanism converts the ferromagnetic exchange and demagnetizing energy of the nanowire into the electrical energy of the conduction electrons through the domain wall motion. The calculations show that this spinmotive force can be several microvolts, which is easily detectable by experiments.

Original languageEnglish
Article number093003
JournalApplied Physics Express
Issue number9
Publication statusPublished - 2011 Sept


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