Frustration on a centred pyrochlore lattice in metal-organic frameworks - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2022

Frustration on a centred pyrochlore lattice in metal-organic frameworks

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

Résumé

Geometric frustration inhibits magnetic systems from ordering, opening a window beyond Landau's paradigm into topological matter and emergent gauge fields, with potential applications to quantum computing. In most systems frustration stems from one of only two elementary units of spins: either triangles or tetrahedra. Here we explore an alternative route for frustration via molecular design in the metal-azolate framework [Mn(II)(ta)2], whose units are centred tetrahedra made of five spins. Despite a Curie-Weiss temperature of -21 K indicating the energy scale of magnetic interactions, [Mn(II)(ta)2] orders only at 0.43 K, putting it firmly in the category of highly frustrated magnets. Using a combination of simulations and field theory, we show that this material is proximate to a spin liquid described as a three-dimensional "slab" of a four-dimensional emergent electric field. The large degeneracy and robustness of this spin liquid, and additional chemical possibilities in the metal-organic frameworks beyond the pyrochlore structure, unlock a new door in frustrated magnetism.
Fichier principal
Vignette du fichier
2203.08780.pdf (1.61 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

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

Identifiants

Citer

Rajah Nutakki, Richard Röss-Ohlenroth, Dirk Volkmer, Anton Jesche, Hans-Albrecht Krug von Nidda, et al.. Frustration on a centred pyrochlore lattice in metal-organic frameworks. 2022. ⟨hal-03617124v1⟩
53 Consultations
9 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More