Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire

Yoshihiko Togawa, Takashi Kimura, Ken Harada, Tsuyoshi Matsuda, Akira Tonomura, Yoshichika Otani, Tetsuya Akashi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We microscopically demonstrate that the magnetic domain is controllably nucleated and erased in the uniformly magnetized wire using a current pulse in small magnetic fields. Lorentz microscopy is performed in Permalloy nanowires with in-plane anisotropy. The stochastic nature of the magnetization reversal due to spin wave and thermal excitations in the absence of magnetic field completely disappears and turns into deterministic in the presence of small magnetic field, which enables the magnetization reversal control. We interpret that the phenomena are associated with Zeeman energy stabilization.

Original languageEnglish
Article number012505
JournalApplied Physics Letters
Volume92
Issue number1
DOIs
Publication statusPublished - Jan 16 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire'. Together they form a unique fingerprint.

  • Cite this