Large magnetoresistance in square-shaped hybrid magnet-semiconductor device

Jinki Hong, Kungwon Rhie, Kyung Ho Shin, Kihyun Kim, S. U. Kim, B. C. Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have obtained large positive and negative magnetoresistance in a square-shaped InAs two-dimensional electron gas in which the magnetoresistance is controlled by the magnetization of a ferromagnetic gate on the surface of the device. From an analysis based on a numerical calculation, the mechanism of this effect can be understood in terms of a spatially varying Hall conductivity and a geometrical effect of the device. This device has several practical advantages over the device with extraordinary magnetoresistance reported by Solin et al.

Original languageEnglish
Pages (from-to)354-358
Number of pages5
JournalJournal of the Korean Physical Society
Volume47
Issue number2
Publication statusPublished - 2005 Aug 1

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semiconductor devices
magnets
electron gas
conductivity
magnetization

Keywords

  • 2DEG
  • Hall angle
  • InAs
  • Magnetic sensor
  • Magnetoresistance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Hong, J., Rhie, K., Shin, K. H., Kim, K., Kim, S. U., & Lee, B. C. (2005). Large magnetoresistance in square-shaped hybrid magnet-semiconductor device. Journal of the Korean Physical Society, 47(2), 354-358.

Large magnetoresistance in square-shaped hybrid magnet-semiconductor device. / Hong, Jinki; Rhie, Kungwon; Shin, Kyung Ho; Kim, Kihyun; Kim, S. U.; Lee, B. C.

In: Journal of the Korean Physical Society, Vol. 47, No. 2, 01.08.2005, p. 354-358.

Research output: Contribution to journalArticle

Hong, J, Rhie, K, Shin, KH, Kim, K, Kim, SU & Lee, BC 2005, 'Large magnetoresistance in square-shaped hybrid magnet-semiconductor device', Journal of the Korean Physical Society, vol. 47, no. 2, pp. 354-358.
Hong, Jinki ; Rhie, Kungwon ; Shin, Kyung Ho ; Kim, Kihyun ; Kim, S. U. ; Lee, B. C. / Large magnetoresistance in square-shaped hybrid magnet-semiconductor device. In: Journal of the Korean Physical Society. 2005 ; Vol. 47, No. 2. pp. 354-358.
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