Continuous control of spin polarization using a magnetic field

J. A. Gifford, G. J. Zhao, B. C. Li, Brian D. Tracy, J. Zhang, D. R. Kim, David Smith, Tingyong Chen

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The giant magnetoresistance (GMR) of a point contact between a Co/Cu multilayer and a superconductor tip varies for different bias voltage. Direct measurement of spin polarization by Andreev reflection spectroscopy reveals that the GMR change is due to a change in spin polarization. This work demonstrates that the GMR structure can be utilized as a spin source and that the spin polarization can be continuously controlled by using an external magnetic field.

Original languageEnglish (US)
Article number212401
JournalApplied Physics Letters
Volume108
Issue number21
DOIs
StatePublished - May 23 2016

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polarization
magnetic fields
electric potential
spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Gifford, J. A., Zhao, G. J., Li, B. C., Tracy, B. D., Zhang, J., Kim, D. R., ... Chen, T. (2016). Continuous control of spin polarization using a magnetic field. Applied Physics Letters, 108(21), [212401]. https://doi.org/10.1063/1.4952437

Continuous control of spin polarization using a magnetic field. / Gifford, J. A.; Zhao, G. J.; Li, B. C.; Tracy, Brian D.; Zhang, J.; Kim, D. R.; Smith, David; Chen, Tingyong.

In: Applied Physics Letters, Vol. 108, No. 21, 212401, 23.05.2016.

Research output: Contribution to journalArticle

Gifford, JA, Zhao, GJ, Li, BC, Tracy, BD, Zhang, J, Kim, DR, Smith, D & Chen, T 2016, 'Continuous control of spin polarization using a magnetic field', Applied Physics Letters, vol. 108, no. 21, 212401. https://doi.org/10.1063/1.4952437
Gifford JA, Zhao GJ, Li BC, Tracy BD, Zhang J, Kim DR et al. Continuous control of spin polarization using a magnetic field. Applied Physics Letters. 2016 May 23;108(21). 212401. https://doi.org/10.1063/1.4952437
Gifford, J. A. ; Zhao, G. J. ; Li, B. C. ; Tracy, Brian D. ; Zhang, J. ; Kim, D. R. ; Smith, David ; Chen, Tingyong. / Continuous control of spin polarization using a magnetic field. In: Applied Physics Letters. 2016 ; Vol. 108, No. 21.
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