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Magnetic moment evolution and spin freezing in doped BaFe2As2 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Article numbers 8,003 : digital, PDF file
Additional Creators
Massachusetts Institute of Technology, United States. Department of Energy. Office of Basic Energy Sciences, National Science Foundation (U.S.), United States. Department of Energy. Office of Intelligence and National Security. Office of Intelligence, Rice University, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Fe-Kβ X-ray emission spectroscopy measurements reveal an asymmetric doping dependence of the magnetic moments μbare in electron- and hole-doped BaFe2As2. At low temperature, μbare is nearly constant in hole-doped samples, whereas it decreases upon electron doping. Increasing temperature substantially enhances μbare in the hole-doped region, which is naturally explained by the theoretically predicted crossover into a spin-frozen state. Our measurements demonstrate the importance of Hund’s-coupling and electronic correlations, especially for hole-doped BaFe2As2, as well as the inadequacy of a fully localized or fully itinerant description of the 122 family of Fe pnictides.
Report Numbers
E 1.99:1425367
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Note
Published through SciTech Connect.
08/14/2017.
": 7286"
Scientific Reports 7 1 ISSN 2045-2322 AM
Pelliciari, Jonathan; Huang, Yaobo; Ishii, Kenji; Zhang, Chenglin; Dai, Pengcheng; Chen, Gen; Xing, Lingyi; Wang, Xiancheng; Jin, Changqing; Ding, Hong; Werner, Philipp; Schmitt, Thorsten.
Kabelwerke Brugg AG Holding (Switzerland)
Univ. of Applied Sciences Northwestern Switzerland (FHNW)
Paul Scherrer Inst. (PSI)
Japan Synchrotron Radiation Research Inst. (JASRI)
Funding Information
SC0012311
C-1893
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