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Incommensurate mgnetism in FeAs srips: Neutron sattering from CaFe 4As3

Nambu, Y., Zhao, L.L., Morosan, E., Kim, K., Kotliar, G., Zajdel, P., Green, M.A., Ratcliff, W., Rodriguez-Rivera, J.A., Broholm, C. and others. (2011) Incommensurate mgnetism in FeAs srips: Neutron sattering from CaFe 4As3. Physical Review Letters: Moving Physics Forward, 106 (3). p. 37201. ISSN 0031-9007. (doi:10.1103/PhysRevLett.106.037201) (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/PhysRevLett.106.037201

Abstract

Magnetism in the orthorhombic metal CaFe4As3 was examined through neutron diffraction for powder and single crystalline samples. Incommensurate [qm?(0.37-0.39)×b*] and predominantly longitudinally (b) modulated order develops through a 2nd order phase transition at TN=89.63(6)K with a 3D Heisenberg-like critical exponent ?=0.365(6). A 1st order transition at T2=25.6(9)K is associated with the development of a transverse component, locking qm to 0.375(2)b*, and increasing the moments from 2.1(1) to 2.2(3) ?B for Fe2+ and from 1.3(3) to 2.4(4)?B for Fe+. The ab initio Fermi surface is consistent with a nesting instability in cross-linked FeAs strips. © 2011 American Physical Society.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.106.037201
Additional information: Unmapped bibliographic data: C7 - 037201 [EPrints field already has value set] LA - English [Field not mapped to EPrints] J2 - Phys Rev Lett [Field not mapped to EPrints] AD - Institute for Quantum Matter, Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, United States [Field not mapped to EPrints] AD - NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States [Field not mapped to EPrints] AD - Department of Physics and Astronomy, Rice University, Houston, TX 77005, United States [Field not mapped to EPrints] AD - Department of Physics, Rutgers University, Piscataway, NJ 08854, United States [Field not mapped to EPrints] AD - Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland [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]
Uncontrolled keywords: Ab initio, Critical exponent, Heisenberg, Single-crystalline, Transverse components, Phase transitions
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 11:08 UTC
Last Modified: 29 May 2019 16:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50979 (The current URI for this page, for reference purposes)
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