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

doi:10.1063/1.4968620

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

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

An unconventional iron superconductor, SmO_0.7F_0.3FeAs, has been utilized to determine the spin polarization and temperature dependence of a highly spin-polarized material, La_0.67Sr_0.33MnO₃, 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 language	English (US)
Article number	115023
Journal	AIP Advances
Volume	6
Issue number	11
DOIs	https://doi.org/10.1063/1.4968620
State	Published - Nov 1 2016

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Determination of spin polarization using an unconventional iron superconductor",

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.",

author = "Gifford, {J. A.} and Chen, {B. B.} and J. Zhang and Zhao, {G. J.} and Kim, {D. R.} and Li, {B. C.} and D. Wu and Tingyong Chen",

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T1 - Determination of spin polarization using an unconventional iron superconductor

AU - Gifford, J. A.

AU - Chen, B. B.

AU - Zhang, J.

AU - Zhao, G. J.

AU - Kim, D. R.

AU - Li, B. C.

AU - Wu, D.

AU - Chen, Tingyong

PY - 2016/11/1

Y1 - 2016/11/1

N2 - 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.

AB - 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

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