Design of domain wall spin torquemeter

Katsuyoshi Matsushita, Munetaka Sasaki

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We investigate an AC-driven oscillation of a domain wall in a one-dimensional clean ferromagnetic wire in order to design an effective domain wall spin torquemeter. The amplitude of the oscillation is evaluated by the collective coordinate method, and its dependence on the nonadiabatic torque constant β is clarified. We showed that the amplitude has an oscillatory component as a function of the AC amplitude. The oscillation period is inversely proportional to |β - α|, where α is the Gilbert damping constant. This result indicates that the measurement of the amplitude enables us to precisely evaluate β.

本文言語English
論文番号043801
ジャーナルjournal of the physical society of japan
84
4
DOI
出版ステータスPublished - 2015 4 15

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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