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Title: Determination of spin polarization using an unconventional iron superconductor

Here, 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 0.33MnO 3, 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.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ; ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [1]
  1. Arizona State Univ., Tempe, AZ (United States)
  2. Nanjing Univ. (China)
Publication Date:
Grant/Contract Number:
SC0012670
Type:
Published Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 11; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Research Org:
Arizona State Univ., Tempe, AZ (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1333017
Alternate Identifier(s):
OSTI ID: 1361531; OSTI ID: 1421185

Gifford, J. A., Chen, B. B., Zhang, J., Zhao, G. J., Kim, D. R., Li, B. C., Wu, D., and Chen, Ting Yong. Determination of spin polarization using an unconventional iron superconductor. United States: N. p., Web. doi:10.1063/1.4968620.
Gifford, J. A., Chen, B. B., Zhang, J., Zhao, G. J., Kim, D. R., Li, B. C., Wu, D., & Chen, Ting Yong. Determination of spin polarization using an unconventional iron superconductor. United States. doi:10.1063/1.4968620.
Gifford, J. A., Chen, B. B., Zhang, J., Zhao, G. J., Kim, D. R., Li, B. C., Wu, D., and Chen, Ting Yong. 2016. "Determination of spin polarization using an unconventional iron superconductor". United States. doi:10.1063/1.4968620.
@article{osti_1333017,
title = {Determination of spin polarization using an unconventional iron superconductor},
author = {Gifford, J. A. and Chen, B. B. and Zhang, J. and Zhao, G. J. and Kim, D. R. and Li, B. C. and Wu, D. and Chen, Ting Yong},
abstractNote = {Here, 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.},
doi = {10.1063/1.4968620},
journal = {AIP Advances},
number = 11,
volume = 6,
place = {United States},
year = {2016},
month = {11}
}