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Author Gifford, J. A. ♦ Zhao, G. J. ♦ Li, B. C. ♦ Tracy, Brian D. ♦ Zhang, J. ♦ Kim, D. R. ♦ Smith, David J. ♦ Chen, T. Y.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ELECTRIC CONTACTS ♦ ELECTRIC POTENTIAL ♦ LAYERS ♦ MAGNETIC FIELDS ♦ MAGNETORESISTANCE ♦ REFLECTION ♦ SPIN ♦ SPIN ORIENTATION ♦ SUPERCONDUCTORS
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.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-23
Publisher Place United States
Journal Applied Physics Letters
Volume Number 108
Issue Number 21


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