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.
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- Determination of Spin Polarization Using an Unconventional Iron Superconductor
- Gifford, Jessica (Author)
- Chen, B. B. (Author)
- Zhang, Ji (Author)
- Zhao, Gejian (Author)
- Kim, Dongrin (Author)
- Li, Bochao (Author)
- Wu, D. (Author)
- Chen, Tingyong (Author)
- College of Liberal Arts and Sciences (Contributor)
- Digital object identifier: 10.1063/1.4968620
- Identifier TypeInternational standard serial numberIdentifier Value2158-3226
- The final version of this article, as published in AIP Advances, can be viewed online at: http://aip.scitation.org/doi/10.1063/1.4968620, opens in a new window
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Gifford, J. A., Chen, B. B., Zhang, J., Zhao, G. J., Kim, D. R., Li, B. C., . . . Chen, T. Y. (2016). Determination of spin polarization using an unconventional iron superconductor. AIP Advances, 6(11), 115023. doi:10.1063/1.4968620