Ferromagnetism in CuFeSb: Evidence of competing magnetic interactions in iron-based superconductors

Qian, B. and Lee, J. and Hu, J. and Wang, G.C. and Kumar, P. and Fang, M.H. and Liu, T.J. and Fobes, D. and Pham, H. and Spinu, L. and Wu, X.S. and Green, M.A. and Lee, S.H. and Mao, Z.Q. (2012) Ferromagnetism in CuFeSb: Evidence of competing magnetic interactions in iron-based superconductors. Physical Review B - Condensed Matter and Materials Physics, 85 (14). 0-0. ISSN 10980121 (ISSN). (doi:https://doi.org/10.1103/PhysRevB.85.144427) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Abstract

We have synthesized a new layered iron-pnictide CuFeSb. This material shares a similar layered tetragonal structure with iron-based superconductors, with Fe square planar sheets forming from the edge-sharing iron antimony tetrahedral network. CuFeSb differs remarkably from Fe-based superconductors in the height of anion Z anion from the Fe plane; Z Sb for CuFeSb is �1.84 �, much larger than Z As (1.31-1.51 �) in FeAs compounds and Z Te (�1.77 �) in Fe 1+yTe. In contrast with the metallic antiferromagnetic (AFM) or superconducting state of iron pnictides and chalcogenides under current studies, CuFeSb exhibits a metallic, ferromagnetic (FM) state with T c=375 K. This finding suggests that the competition between AFM and FM coupling may exist in Fe-based superconductors and that the nature of magnetic coupling within the Fe plane is indeed dependent on the height of anion as predicted in theories. © 2012 American Physical Society.

Item Type: Article
Additional information: Unmapped bibliographic data: C7 - 144427 [EPrints field already has value set] LA - English [Field not mapped to EPrints] J2 - Phys. Rev. B Condens. Matter Mater. Phys. [Field not mapped to EPrints] AD - Department of Physics and Engineering Physics, Tulane University, New Orleans, LA 70118, United States [Field not mapped to EPrints] AD - Advanced Functional Materials Lab, Department of Physics, Changshu Institute of Technology, Changshu 215500, China [Field not mapped to EPrints] AD - Department of Physics, University of Virginia, Charlottesville, VA 22904, United States [Field not mapped to EPrints] AD - Advanced Material Research Institute, Physics Department, University of New Orleans, New Orleans, LA 70148, United States [Field not mapped to EPrints] AD - Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093, China [Field not mapped to EPrints] AD - NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20889, United States [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 14 Oct 2015 11:28 UTC
Last Modified: 14 Oct 2015 11:28 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50967 (The current URI for this page, for reference purposes)
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