Magnetoresistance of ferromagnetically contacted carbon nanotubes

B. W. Alphenaar; K. Tsukagoshi; M. Wagner

doi:10.1016/S1386-9477(01)00145-X

Magnetoresistance of ferromagnetically contacted carbon nanotubes

B. W. Alphenaar, K. Tsukagoshi, M. Wagner

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

8 Citations (Scopus)

Abstract

Magnetoresistance measurements of multi-walled carbon nanotubes having one or two ferromagnetic contacts are compared. Nanotubes with two cobalt contacts show hysteretic switching in the magnetoresistance, with a maximum change of 9% at 4.2 K, while nanotubes with one cobalt contact and one platinum/gold contact show no magnetoresistance switching. This provides further evidence for coherent transport of electron spin through the multi-walled nanotube. In addition, the magnetoresistance ratio in the ferromagnetic nanotube device is calculated for a two-band ballistic model, and gives a maximum value of 25%.

Original language	English
Pages (from-to)	499-504
Number of pages	6
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	10
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(01)00145-X
Publication status	Published - 2001 May 1
Externally published	Yes

Keywords

Carbon nanotubes
Ferromagnets
Spin
Spin eectronics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(01)00145-X

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abstract = "Magnetoresistance measurements of multi-walled carbon nanotubes having one or two ferromagnetic contacts are compared. Nanotubes with two cobalt contacts show hysteretic switching in the magnetoresistance, with a maximum change of 9% at 4.2 K, while nanotubes with one cobalt contact and one platinum/gold contact show no magnetoresistance switching. This provides further evidence for coherent transport of electron spin through the multi-walled nanotube. In addition, the magnetoresistance ratio in the ferromagnetic nanotube device is calculated for a two-band ballistic model, and gives a maximum value of 25%.",

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T1 - Magnetoresistance of ferromagnetically contacted carbon nanotubes

AU - Alphenaar, B. W.

AU - Tsukagoshi, K.

AU - Wagner, M.

PY - 2001/5/1

Y1 - 2001/5/1

N2 - Magnetoresistance measurements of multi-walled carbon nanotubes having one or two ferromagnetic contacts are compared. Nanotubes with two cobalt contacts show hysteretic switching in the magnetoresistance, with a maximum change of 9% at 4.2 K, while nanotubes with one cobalt contact and one platinum/gold contact show no magnetoresistance switching. This provides further evidence for coherent transport of electron spin through the multi-walled nanotube. In addition, the magnetoresistance ratio in the ferromagnetic nanotube device is calculated for a two-band ballistic model, and gives a maximum value of 25%.

AB - Magnetoresistance measurements of multi-walled carbon nanotubes having one or two ferromagnetic contacts are compared. Nanotubes with two cobalt contacts show hysteretic switching in the magnetoresistance, with a maximum change of 9% at 4.2 K, while nanotubes with one cobalt contact and one platinum/gold contact show no magnetoresistance switching. This provides further evidence for coherent transport of electron spin through the multi-walled nanotube. In addition, the magnetoresistance ratio in the ferromagnetic nanotube device is calculated for a two-band ballistic model, and gives a maximum value of 25%.

KW - Carbon nanotubes

KW - Ferromagnets

KW - Spin

KW - Spin eectronics

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ER -

Magnetoresistance of ferromagnetically contacted carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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