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  Magnetism and site exchange in CuFeAs and CuFeSb: A microscopic and theoretical investigation

Kamusella, S., Klauss, H.-H., Thakur, G. S., Haque, Z., Gupta, L. C., Ganguli, A. K., et al. (2017). Magnetism and site exchange in CuFeAs and CuFeSb: A microscopic and theoretical investigation. Physical Review B, 95(9): 094415, pp. 1-13. doi:10.1103/PhysRevB.95.094415.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-2234-E Version Permalink: http://hdl.handle.net/21.11116/0000-0001-56FC-3
Genre: Journal Article

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 Creators:
Kamusella, Sirko1, Author
Klauss, Hans-Henning1, Author
Thakur, Gohil S.1, Author
Haque, Zeba1, Author
Gupta, Laxmi C.1, Author
Ganguli, Ashok K.1, Author
Kraft, Inga2, Author              
Burkhardt, Ulrich3, Author              
Rosner, Helge2, Author              
Luetkens, Hubertus1, Author
Lynn, Jeffrey W.1, Author
Zhao, Yang1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863422              

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 Abstract: We have investigated the magnetic ground state of CuFeAs and CuFeSb by means of Fe-57-Mossbauer spectroscopy, muon spin rotation/ relaxation (mu SR), neutron diffraction, and electronic structure calculations. Both materials share the 111-LiFeAs crystal structure and are closely related to the class of iron-based superconductors. In both materials there is a considerable occupancy of the Cu site by Fe, which leads to ferromagnetic moments, which are magnetically strongly coupled to the regular Fe site magnetism. Our study shows that CuFeAs is close to an antiferromagnetic instability, whereas a ferromagnetic ground state is observed in CuFeSb, supporting theoretical models of anion height driven magnetism.

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Language(s): eng - English
 Dates: 2017-03-132017-03-13
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 95 (9) Sequence Number: 094415 Start / End Page: 1 - 13 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008