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Strong magnetic correlations to 900 K in single crystals of the trigonal antiferromagnetic insulators SrMn2As2 and CaMn2As2

TitleStrong magnetic correlations to 900 K in single crystals of the trigonal antiferromagnetic insulators SrMn2As2 and CaMn2As2
Publication TypeJournal Article
Year of Publication2016
AuthorsSangeetha, NS, Pandey, A, Benson, ZA, Johnston, DC
JournalPhysical Review B
Volume94
Pagination094417
Date Published09
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000383139700003
Keywordschalcogenides, frustrated magnets, high-temperature superconductivity, iron-based superconductors, order, physics, pnictides, state
Abstract

= T-N) data indicate that the hexagonal c axis is the hard axis and hence that the ordered Mn moments are aligned in the ab plane. The chi(T) data for both compounds and the C-p(T) for SrMn2As2 show strong dynamic short-range AFM correlations from T-N up to at least 900 K, likely associated with quasi-two-dimensional connectivity of strong AFM exchange interactions between the Mn spins within the corrugated honeycomb Mn layers parallel to the ab plane.

DOI10.1103/PhysRevB.94.094417
Custom 1

Complex States

Alternate JournalPhys. Rev. B