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Soft striped magnetic fluctuations competing with superconductivity in Fe1+xTe

Stock, C., Rodriguez, E.E., Sobolev, O., Rodriguez-Rivera, J.A., Ewings, R.A., Taylor, J.W., Christianson, A.D., Green, M.A. (2014) Soft striped magnetic fluctuations competing with superconductivity in Fe1+xTe. Physical Review B - Condensed Matter and Materials Physics, 90 (12). 0-0. ISSN 10980121 (ISSN). (doi:10.1103/PhysRevB.90.121113) (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

Neutron spectroscopy is used to investigate the magnetic fluctuations in Fe1+xTe - a parent compound of chalcogenide superconductors. Incommensurate "stripelike" excitations soften with increased interstitial iron concentration. The energy crossover from incommensurate to stripy fluctuations defines an apparent hourglass dispersion. Application of sum rules of neutron scattering find that the integrated intensity is inconsistent with an S=1Fe2+ ground state and significantly less than S=2 predicted from weak crystal field arguments pointing towards the Fe2+ being in a superposition of orbital states. The results suggest that a highly anisotropic order competes with superconductivity in chalcogenide systems. © 2014 American Physical Society.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.90.121113
Additional information: Unmapped bibliographic data: C7 - 121113 [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 - School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom [Field not mapped to EPrints] AD - Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, United States [Field not mapped to EPrints] AD - Forschungs-Neutronenquelle Heinz Maier-Leibnitz, FRM2, Garching, Germany [Field not mapped to EPrints] AD - NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Dr., Gaithersburg, MD, United States [Field not mapped to EPrints] AD - Department of Materials Science, University of Maryland, College Park, MD, United States [Field not mapped to EPrints] AD - ISIS Facility, Rutherford Appleton Laboratory, Didcot, United Kingdom [Field not mapped to EPrints] AD - Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States [Field not mapped to EPrints] AD - School of Physical Sciences, University of Kent, Canterbury, United Kingdom [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 11:32 UTC
Last Modified: 29 May 2019 16:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50954 (The current URI for this page, for reference purposes)
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