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Journal articles
Direct evidence of spin filtering across MnFe$_2$O$_4$ tunnel barrier by Meservey-Tedrow experiment
Abstract : A spin filtering effect has been evidenced in epitaxial MnFe$_2$O$_4$ tunnel barriers directly by Meservey-Tedrow experiments. The asymmetry of the Zeeman-split tunneling conductance curves of the superconducting Al spin analyzer in Pt(111)/MnFe$_2$O$_4$(111)/$\gamma$-Al$_2$O$_3$(111)/Al tunnel junctions revealed a positive spin-polarization (up to + 9%), proving the potential of manganese ferrite for generation of a spin-polarized current. A negatively polarized spin filtering being expected theoretically, different mechanisms are discussed to explain both sign and amplitude of the measured spin-polarization.
Cited literature [23 references]
https://hal-cea.archives-ouvertes.fr/cea-01481041
Contributor : Dominique Girard <>
Submitted on : Thursday, March 2, 2017 - 10:36:06 AM
Last modification on : Monday, January 18, 2021 - 12:20:06 PM
Long-term archiving on: : Wednesday, May 31, 2017 - 1:24:00 PM
Contributor : Dominique Girard <>
Submitted on : Thursday, March 2, 2017 - 10:36:06 AM
Last modification on : Monday, January 18, 2021 - 12:20:06 PM
Long-term archiving on: : Wednesday, May 31, 2017 - 1:24:00 PM
File
PhysRevB.87.184422.pdf
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