Substantial reduction in the depinning field of vortex domain walls triggered by spin-transfer induced resonance

T. Nozaki; H. Maekawa; M. Mizuguchi; M. Shiraishi; T. Shinjo; Y. Suzuki; H. Maehara; S. Kasai; T. Ono

doi:10.1063/1.2772174

Substantial reduction in the depinning field of vortex domain walls triggered by spin-transfer induced resonance

T. Nozaki, H. Maekawa, M. Mizuguchi, M. Shiraishi, T. Shinjo, Y. Suzuki, H. Maehara, S. Kasai, T. Ono

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

An influence of spin-transfer-induced resonant excitation of a vortex magnetic domain wall on magnetization reversal process was investigated in Permalloy nanowires. Sizable reduction of the depinning field was observed under an application of radio frequency current when the frequency coincided with resonance of the vortex core. The resonant frequency was found to increase by shrinking the wire width. These results lead the authors to conclude that the spin-transfer-induced resonant excitation assists the depinning of the vortex domain walls. This provides an important insight for the realization of novel magnetic memory and logic devices based on current-driven domain wall manipulation.

Original language	English
Article number	082502
Journal	Applied Physics Letters
Volume	91
Issue number	8
DOIs	https://doi.org/10.1063/1.2772174
Publication status	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2772174

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title = "Substantial reduction in the depinning field of vortex domain walls triggered by spin-transfer induced resonance",

abstract = "An influence of spin-transfer-induced resonant excitation of a vortex magnetic domain wall on magnetization reversal process was investigated in Permalloy nanowires. Sizable reduction of the depinning field was observed under an application of radio frequency current when the frequency coincided with resonance of the vortex core. The resonant frequency was found to increase by shrinking the wire width. These results lead the authors to conclude that the spin-transfer-induced resonant excitation assists the depinning of the vortex domain walls. This provides an important insight for the realization of novel magnetic memory and logic devices based on current-driven domain wall manipulation.",

author = "T. Nozaki and H. Maekawa and M. Mizuguchi and M. Shiraishi and T. Shinjo and Y. Suzuki and H. Maehara and S. Kasai and T. Ono",

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year = "2007",

doi = "10.1063/1.2772174",

language = "English",

volume = "91",

journal = "Applied Physics Letters",

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T1 - Substantial reduction in the depinning field of vortex domain walls triggered by spin-transfer induced resonance

AU - Nozaki, T.

AU - Maekawa, H.

AU - Mizuguchi, M.

AU - Shiraishi, M.

AU - Shinjo, T.

AU - Suzuki, Y.

AU - Maehara, H.

AU - Kasai, S.

AU - Ono, T.

N1 - Funding Information: This work was supported in part by New Energy and Industrial Technology Development Organization (NEDO).

PY - 2007

Y1 - 2007

N2 - An influence of spin-transfer-induced resonant excitation of a vortex magnetic domain wall on magnetization reversal process was investigated in Permalloy nanowires. Sizable reduction of the depinning field was observed under an application of radio frequency current when the frequency coincided with resonance of the vortex core. The resonant frequency was found to increase by shrinking the wire width. These results lead the authors to conclude that the spin-transfer-induced resonant excitation assists the depinning of the vortex domain walls. This provides an important insight for the realization of novel magnetic memory and logic devices based on current-driven domain wall manipulation.

AB - An influence of spin-transfer-induced resonant excitation of a vortex magnetic domain wall on magnetization reversal process was investigated in Permalloy nanowires. Sizable reduction of the depinning field was observed under an application of radio frequency current when the frequency coincided with resonance of the vortex core. The resonant frequency was found to increase by shrinking the wire width. These results lead the authors to conclude that the spin-transfer-induced resonant excitation assists the depinning of the vortex domain walls. This provides an important insight for the realization of novel magnetic memory and logic devices based on current-driven domain wall manipulation.

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Substantial reduction in the depinning field of vortex domain walls triggered by spin-transfer induced resonance

Abstract

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