Noncollinear spin-density-wave antiferromagnetism in FeAs

Rodriguez, E.E. and Stock, C. and Krycka, K.L. and Majkrzak, C.F. and Zajdel, P. and Kirshenbaum, K. and Butch, N.P. and Saha, S.R. and Paglione, J. and Green, M.A. (2011) Noncollinear spin-density-wave antiferromagnetism in FeAs. Physical Review B - Condensed Matter and Materials Physics, 83 (13). 0-0. ISSN 1098-0121. (doi:https://doi.org/10.1103/PhysRevB.83.134438) (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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Official URL
http://dx.doi.org/10.1103/PhysRevB.83.134438

Abstract

The nature of the magnetism in the simplest iron arsenide is of fundamental importance in understanding the interplay between localized and itinerant magnetism and superconductivity. We present the magnetic structure of the itinerant monoarsenide FeAs with the B31 structure. Powder neutron diffraction confirms incommensurate modulated magnetism with wave vector q=(0.395±0.001)c* at 4 K, but can not distinguish between a simple spiral and a collinear spin-density-wave structure. Polarized single-crystal diffraction confirms that the structure is best described as a noncollinear spin-density wave arising from a combination of itinerant and localized behavior with spin amplitude along the b-axis direction being (15±5)% larger than in the a direction. Furthermore, the propagation vector is temperature dependent, and the magnetization near the critical point indicates a two-dimensional Heisenberg system. The magnetic structures of closely related systems are discussed and compared to that of FeAs. © 2011 American Physical Society.

Item Type: Article
Additional information: Unmapped bibliographic data: C7 - 134438 [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 - NIST Center for Neutron Research, NIST, 100 Bureau Dr., Gaithersburg, MD 20878, United States [Field not mapped to EPrints] AD - Indiana University, 2401 Milo B. Sampson Lane, Bloomington, IN 47408, United States [Field not mapped to EPrints] AD - Division of Physics of Crystals, Institute of Physics, University of Silesia, Katowice, PL-40-007, Poland [Field not mapped to EPrints] AD - Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, United States [Field not mapped to EPrints] AD - Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, 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 11:05 UTC
Last Modified: 21 Oct 2015 14:19 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50977 (The current URI for this page, for reference purposes)
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