Frustration-induced one-dimensionality in the isosceles triangular antiferromagnetic lattice of δ-(EDT-TTF-CONMe2)2AsF6 - Université d'Angers Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2016

Frustration-induced one-dimensionality in the isosceles triangular antiferromagnetic lattice of δ-(EDT-TTF-CONMe2)2AsF6

Bálint Náfrádi
  • Fonction : Auteur
Ágnes Antal
  • Fonction : Auteur
Laszlo Kiss
  • Fonction : Auteur
Cécile Mézière
Patrick Batail
  • Fonction : Auteur
  • PersonId : 992004
László Forró
  • Fonction : Auteur

Résumé

The 1/4-filled organic compound, δ-(EDT-TTF-CONMe2)2AsF6 is a frustrated two-dimensional triangular magnetic system as shown by high-frequency (111.2 and 222.4 GHz) electron spin resonance (ESR) and structural data in the literature. The material gradually orders antiferromagnetically below 40 K, but some magnetically disordered domains persist down to 4 K. We propose that in defect free regions frustration prevents true magnetic order down to at least 4 K in spite of the large first- and second-neighbor exchange interactions along chains and between chains, respectively. The antiferromagnetic (AFM) order gradually developing below 40 K nucleates around structural defects that locally cancel frustration. Two antiferromagnetic resonance modes mapped in the principal planes at 4 K are assigned to the very weakly interacting one-dimensional molecular chains in antiferromagnetic regions.

Domaines

Chimie
Fichier principal
Vignette du fichier
prb_2016_94_174413.pdf (1.39 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02564186 , version 1 (05-05-2020)

Identifiants

Citer

Bálint Náfrádi, Ágnes Antal, Titusz Fehér, Laszlo Kiss, Cécile Mézière, et al.. Frustration-induced one-dimensionality in the isosceles triangular antiferromagnetic lattice of δ-(EDT-TTF-CONMe2)2AsF6. Physical Review B, 2016, 94 (17), pp.174413. ⟨10.1103/PhysRevB.94.174413⟩. ⟨hal-02564186⟩
11 Consultations
75 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More