Magnetism of coupled spin tetrahedra in ilinskite-type KCu5O2(SeO3)2Cl3

Autor: Danis I. Badrtdinov, Elena S. Kuznetsova, Valeriy Yu. Verchenko, Peter S. Berdonosov, Valeriy A. Dolgikh, Vladimir V. Mazurenko, Alexander A. Tsirlin
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
Druh dokumentu: article
ISSN: 2045-2322
DOI: 10.1038/s41598-018-20350-z
Popis: Abstract Synthesis, thermodynamic properties, and microscopic magnetic model of ilinskite-type KCu5O2(SeO3)2Cl3 built by corner-sharing Cu4 tetrahedra are reported, and relevant magnetostructural correlations are discussed. Quasi-one-dimensional magnetic behavior with the short-range order around 50 K is rationalized in terms of weakly coupled spin ladders (tubes) having a complex topology formed upon fragmentation of the tetrahedral network. This fragmentation is rooted in the non-trivial effect of the SeO3 groups that render the Cu–O–Cu superexchange strongly ferromagnetic even at bridging angles exceeding 110°.
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