Frustration on a centered pyrochlore lattice in metal-organic frameworks - Laboratoire Ondes et Matière d'Aquitaine Access content directly
Journal Articles Physical Review Research Year : 2023

Frustration on a centered pyrochlore lattice in metal-organic frameworks

Rajah Nutakki
  • Function : Author
Richard Röss-Ohlenroth
  • Function : Author
Dirk Volkmer
  • Function : Author
Anton Jesche
  • Function : Author
Hans-Albrecht Krug von Nidda
  • Function : Author
Alexander A. Tsirlin
  • Function : Author
Philipp Gegenwart
  • Function : Author
Lode Pollet
  • Function : Author


Geometric frustration inhibits magnetic systems from ordering, opening a window to unconventional phases of matter. The paradigmatic frustrated lattice in three dimensions to host a spin liquid is the pyrochlore, although there remain few experimental compounds thought to realize such a state. Here we go beyond the pyrochlore via molecular design in the metal-azolate framework [Mn(II)(ta)2], which realizes a closely related centred pyrochlore lattice of Mn-spins with S=5/2. Despite a Curie-Weiss temperature of −21 K indicating the energy scale of magnetic interactions, [Mn(II)(ta)2] orders at only 430 mK, putting it firmly in the category of highly frustrated magnets. Comparing magnetization and specific heat measurements to numerical results for a minimal Heisenberg model, we predict that this material displays distinct features of a classical spin liquid with a structure factor reflecting Coulomb physics in the presence of charges.
Fichier principal
Vignette du fichier
paper.pdf (1.11 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03617124 , version 1 (30-08-2022)
hal-03617124 , version 2 (24-04-2023)



Rajah Nutakki, Richard Röss-Ohlenroth, Dirk Volkmer, Anton Jesche, Hans-Albrecht Krug von Nidda, et al.. Frustration on a centered pyrochlore lattice in metal-organic frameworks. Physical Review Research, 2023, 5, pp.L022018. ⟨10.1103/PhysRevResearch.5.L022018⟩. ⟨hal-03617124v2⟩


45 View
2 Download



Gmail Facebook Twitter LinkedIn More