Electron spins interaction in the spin-Peierls phase of the organic spin chain (o-DMTTF)2X (X = Cl, Br, I) - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2022

Electron spins interaction in the spin-Peierls phase of the organic spin chain (o-DMTTF)2X (X = Cl, Br, I)

Résumé

We investigate the electron spin resonance of the organic spin-Peierls chain (o-DMTTF)2X with X = Cl, Br and I. We describe the temperature dependence of the spin gap during the phase transition and quantify the dimerization parameter δ. At the lowest temperatures, the susceptibility is governed by defects in the spin dimerized chain. Such strongly correlated defects are the consequence of breaks in the translational symmetry of the chain. In the vicinity of the defects the spins are polarized antiferomagnetically forming a magnetic soliton: a spin 1 2 quasi-particle of size ruled by δ pinned to the defects. For (o-DMTTF)2Br and (o-DMTTF)2Cl, we show that the one-half of the total number of solitons are in isolation (as singles) whereas the other half form pairs (soliton dimers)with a strong magnetic coupling. The Rabi oscillations of both the single-soliton and the soliton-dimer are observed, which is a prerequisite in the context of quantum information.
Fichier principal
Vignette du fichier
DMTTF_Arvix.pdf (2.46 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03578624 , version 1 (17-02-2022)

Identifiants

Citer

Loic Soriano, Olivier Pilone, Michael D. D Kuz'Min, Herve Vezin, Olivier Jeannin, et al.. Electron spins interaction in the spin-Peierls phase of the organic spin chain (o-DMTTF)2X (X = Cl, Br, I). Physical Review B, 2022, 105 (6), ⟨10.1103/PhysRevB.105.064434⟩. ⟨hal-03578624⟩
120 Consultations
51 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More