Structure, magnetic order and excitations in the 245 family of Fe-based superconductors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number023201
Journal / PublicationJournal of Physics Condensed Matter
Volume27
Issue number2
Online published26 Nov 2014
Publication statusPublished - 21 Jan 2015
Externally publishedYes

Abstract

Elastic neutron scattering simultaneously probes both the crystal structure and magnetic order in a material. Inelastic neutron scattering measures phonons and magnetic excitations. Here, we review the average composition, crystal structure and magnetic order in the 245 family of Fe-based superconductors and in related insulating compounds from neutron diffraction works. A three-dimensional phase-diagram summarizes various structural, magnetic and electronic properties as a function of the sample composition. A high pressure phase diagram for the superconductor is also provided. Magnetic excitations and the theoretic Heisenberg Hamiltonian are provided for the superconductor. Issues for future works are discussed.

Research Area(s)

  • Fe-based superconductors, magnetic excitations, magnetic order, phase diagram