Deutsch
 
Benutzerhandbuch Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Frustrated spin chain physics near the Majumdar-Ghosh point in szenicsite Cu3(MoO4)(OH)4

MPG-Autoren
/persons/resource/persons126724

Lebernegg,  Stefan
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126819

Rosner,  H.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Lebernegg, S., Janson, O., Rousochatzakis, I., Nishimoto, S., Rosner, H., & Tsirlin, A. A. (2017). Frustrated spin chain physics near the Majumdar-Ghosh point in szenicsite Cu3(MoO4)(OH)4. Physical Review B, 95(3): 035145, pp. 1-10. doi:10.1103/PhysRevB.95.035145.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002D-2DCA-6
Zusammenfassung
In this joint experimental and theoretical work magnetic properties of the Cu2+ mineral szenicsite Cu-3(MoO4)(OH)(4) are investigated. This compound features isolated triple chains in its crystal structure, where the central chain involves an edge-sharing geometry of the CuO4 plaquettes, while the two side chains feature a corner-sharing zigzag geometry. The magnetism of the side chains can be described in terms of antiferromagnetic dimers with a coupling larger than 200 K. The central chain was found to be a realization of the frustrated antiferromagnetic J(1)-J(2) chain model with J(1) similar or equal to 68 K and a sizable second-neighbor coupling J(2). The central and side chains are nearly decoupled owing to interchain frustration. Therefore, the low-temperature behavior of szenicsite should be entirely determined by the physics of the central frustrated J(1)-J(2) chain. Our heat-capacity measurements reveal an accumulation of magnetic entropy at low temperatures and suggest a proximity of the system to the Majumdar-Ghosh point of the antiferromagnetic J(1)-J(2) spin chain, J(2)/J(1) = 0.5.