Determination of spin polarization using an unconventional iron superconductor

J. A. Gifford, B. B. Chen, J. Zhang, G. J. Zhao, D. R. Kim, B. C. Li, D. Wu, Tingyong Chen

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Abstract

An unconventional iron superconductor, SmO0.7F0.3FeAs, has been utilized to determine the spin polarization and temperature dependence of a highly spin-polarized material, La0.67Sr0.33MnO3, with Andreev reflection spectroscopy. The polarization value obtained is the same as that determined using a conventional superconductor Pb but the temperature dependence of the spin polarization can be measured up to 52 K, a temperature range, which is several times wider than that using a typical conventional superconductor. The result excludes spin-parallel triplet pairing in the iron superconductor.

Original languageEnglish (US)
Article number115023
JournalAIP Advances
Volume6
Issue number11
DOIs
StatePublished - Nov 1 2016

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Gifford, J. A., Chen, B. B., Zhang, J., Zhao, G. J., Kim, D. R., Li, B. C., Wu, D., & Chen, T. (2016). Determination of spin polarization using an unconventional iron superconductor. AIP Advances, 6(11), [115023]. https://doi.org/10.1063/1.4968620