Journal
PHYSICAL REVIEW B
Volume 96, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.96.094415
Keywords
-
Funding
- Landesstiftung Baden Wurttemberg
- DFG [INST 41/863-1, SPP1601]
- CNRS
- ANR [ANR-12-PDOC-0038]
- Region Nouvelle Aquitaine
- Universite de Bordeaux
- Agence Nationale de la Recherche (ANR) [ANR-12-PDOC-0038] Funding Source: Agence Nationale de la Recherche (ANR)
Ask authors/readers for more resources
Single-chain magnets (SCMs) are one-dimensional coordination polymers or spin chains that display slow relaxation of the magnetization. Typically their static magnetic properties are described by the Heisenberg model, while the description of their dynamic magnetic properties is based on an Ising-like model. The types of excitations predicted by these models (collective vs localized) are quite different. Therefore we probed the nature of the elementary excitations for two SCMs abbreviated Mn2Ni and Mn2Fe, as well as a mononuclear derivative of the Mn2Fe chain, by means of high-frequency electron paramagnetic resonance spectroscopy (HFEPR) and inelastic neutron scattering (INS). We find that the HFEPR spectra of the chains are clearly distinct from those of the monomer. The momentum transfer dependence of the INS intensity did not reveal significant dispersion, indicating an essentially localized nature of the excitations. At the lowest temperatures these are modified by the occurrence of short-range correlations.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available