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Spin-polarized tunneling in a half-metallic ferromagnet (1999)

Tanaka, Clifford T. ; Nowak, Janusz ; Moodera, Jagadeesh S.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 86 (1999), S. 6239-6242

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Direct measurement of the conduction electron spin polarization (P) in epitaxial NiMnSb was performed to test the prediction of half metallicity in this material. Spin-polarized tunneling in NiMnSb/Al2O3/Al junctions showed P of 28%, contrary to the predicted value of 100%. Magnetoresistance measurements in NiMnSb/Al2O3/Ni80Fe20 junctions concurred with this result. The discrepancy between theory and experiment is discussed. Also, the latter junctions show four nonvolatile remanent states due to the NiMnSb magnetocrystalline anisotropy, which has potential as four-level logic elements. © 1999 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.371678

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