Detection of vortex-core dynamics using current-induced self-bistable rectifying effect

M. Goto, H. Hata, A. Yamaguchi, H. Miyajima, Y. Nakatani, T. Yamaoka, Yukio Nozaki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A magnetic vortex core confined in a micron-scale magnetic disk is resonantly excited by spin-polarized radio-frequency (rf) current and rf field. We show that rectifying voltage spectra caused by the vortex core resonance is dependent on the core polarity. Rectifying voltage spectra are given by the superposition of the polarity-dependent term and the polarity-independent term. The sign of the polarity-dependent rectifying voltage reverses when the sign of polarity P or external field H is reversed. This experimental result can be explained by the anisotropic magnetoresistance effect caused by the vortex core motion.

Original languageEnglish
Article number012080
JournalJournal of Physics: Conference Series
Volume266
Issue number1
DOIs
Publication statusPublished - 2011

Fingerprint

polarity
vortices
radio frequencies
electric potential
magnetic disks

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Detection of vortex-core dynamics using current-induced self-bistable rectifying effect. / Goto, M.; Hata, H.; Yamaguchi, A.; Miyajima, H.; Nakatani, Y.; Yamaoka, T.; Nozaki, Yukio.

In: Journal of Physics: Conference Series, Vol. 266, No. 1, 012080, 2011.

Research output: Contribution to journalArticle

Goto, M. ; Hata, H. ; Yamaguchi, A. ; Miyajima, H. ; Nakatani, Y. ; Yamaoka, T. ; Nozaki, Yukio. / Detection of vortex-core dynamics using current-induced self-bistable rectifying effect. In: Journal of Physics: Conference Series. 2011 ; Vol. 266, No. 1.
@article{d770f793a9e74ce5bc9234435adcf89b,
title = "Detection of vortex-core dynamics using current-induced self-bistable rectifying effect",
abstract = "A magnetic vortex core confined in a micron-scale magnetic disk is resonantly excited by spin-polarized radio-frequency (rf) current and rf field. We show that rectifying voltage spectra caused by the vortex core resonance is dependent on the core polarity. Rectifying voltage spectra are given by the superposition of the polarity-dependent term and the polarity-independent term. The sign of the polarity-dependent rectifying voltage reverses when the sign of polarity P or external field H is reversed. This experimental result can be explained by the anisotropic magnetoresistance effect caused by the vortex core motion.",
author = "M. Goto and H. Hata and A. Yamaguchi and H. Miyajima and Y. Nakatani and T. Yamaoka and Yukio Nozaki",
year = "2011",
doi = "10.1088/1742-6596/266/1/012080",
language = "English",
volume = "266",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Detection of vortex-core dynamics using current-induced self-bistable rectifying effect

AU - Goto, M.

AU - Hata, H.

AU - Yamaguchi, A.

AU - Miyajima, H.

AU - Nakatani, Y.

AU - Yamaoka, T.

AU - Nozaki, Yukio

PY - 2011

Y1 - 2011

N2 - A magnetic vortex core confined in a micron-scale magnetic disk is resonantly excited by spin-polarized radio-frequency (rf) current and rf field. We show that rectifying voltage spectra caused by the vortex core resonance is dependent on the core polarity. Rectifying voltage spectra are given by the superposition of the polarity-dependent term and the polarity-independent term. The sign of the polarity-dependent rectifying voltage reverses when the sign of polarity P or external field H is reversed. This experimental result can be explained by the anisotropic magnetoresistance effect caused by the vortex core motion.

AB - A magnetic vortex core confined in a micron-scale magnetic disk is resonantly excited by spin-polarized radio-frequency (rf) current and rf field. We show that rectifying voltage spectra caused by the vortex core resonance is dependent on the core polarity. Rectifying voltage spectra are given by the superposition of the polarity-dependent term and the polarity-independent term. The sign of the polarity-dependent rectifying voltage reverses when the sign of polarity P or external field H is reversed. This experimental result can be explained by the anisotropic magnetoresistance effect caused by the vortex core motion.

UR - http://www.scopus.com/inward/record.url?scp=79952035545&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952035545&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/266/1/012080

DO - 10.1088/1742-6596/266/1/012080

M3 - Article

VL - 266

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012080

ER -