Pressure-induced volume-collapsed tetragonal phase of CaFe 2As2 as seen via neutron scattering

Kreyssig, A., Green, M.A., Lee, Y., Samolyuk, G.D., Zajdel, P., Lynn, J.W., Bud'ko, S.L., Torikachvili, M.S., Ni, N., Nandi, S., and others. (2008) Pressure-induced volume-collapsed tetragonal phase of CaFe 2As2 as seen via neutron scattering. Physical Review B, 78 (18). p. 184517. ISSN 1098-0121. (doi:10.1103/PhysRevB.78.184517) (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.78.184517

Abstract

Recent investigations of the superconducting iron-arsenide families have highlighted the role of pressure, be it chemical or mechanical, in fostering superconductivity. Here we report that CaFe2As2 undergoes a pressure-induced transition to a nonmagnetic volume "collapsed" tetragonal phase, which becomes superconducting at lower temperature. Spin-polarized total-energy calculations on the collapsed structure reveal that the magnetic Fe moment itself collapses, consistent with the absence of magnetic order in neutron diffraction. © 2008 The American Physical Society.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.78.184517
Additional information: Unmapped bibliographic data: C7 - 184517 [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 - Ames Laboratory, US DOE, Ames, IA 50011, United States [Field not mapped to EPrints] AD - Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, 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 Materials Science and Engineering, University of Maryland, College Park, MD 20742, United States [Field not mapped to EPrints] AD - Department of Chemistry, University College of London, 20 Gordon Street, London W1X 0AJ, United Kingdom [Field not mapped to EPrints] AD - Department of Physics, San Diego State University, San Diego, CA 92182, United States [Field not mapped to EPrints] AD - Helmholtz-Zentrum Berlin für Materialien und Energie, Glienicker Str. 100, 14109 Berlin, Germany [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: 15 Oct 2015 10:58 UTC
Last Modified: 29 May 2019 16:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/51012 (The current URI for this page, for reference purposes)
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