Title :

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

Author(s) :

Soriano, L. [Auteur]
Institut des Matériaux, de Microélectronique et des Nanosciences de Provence [IM2NP]
Pilone, O. [Auteur]
Institut des Matériaux, de Microélectronique et des Nanosciences de Provence [IM2NP]
Kuz'min, M. D. [Auteur]
Institut des Matériaux, de Microélectronique et des Nanosciences de Provence [IM2NP]
Vezin, Herve [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Jeannin, O. [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Fourmigué, M. [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Orio, M. [Auteur]
Bertaina, S. [Auteur]

Journal title :

Physical Review B

Abbreviated title :

Phys. Rev. B

Volume number :

105

Publisher :

American Physical Society (APS)

Publication date :

2022-02-28

ISSN :

2469-9950

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [en]

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 ...
Show more >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 12 quasiparticle 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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Comment :

https://hal.archives-ouvertes.fr/hal-03578624

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Research team(s) :

Propriétés magnéto structurales des matériaux (PMSM)

Submission date :

2022-03-03T07:00:08Z
2022-03-21T08:46:42Z