Publication detail

Elementary excitations in single-chain magnets

Lutz, P. Aguila, D. Mondal, A. Pinkowicz, D. Marx, R. Neugebauer, P. Fak, B. Ollivier, J. Clerac, R. van Slageren, J

Original Title

Elementary excitations in single-chain magnets

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

MOLECULE MAGNETS; BEHAVIOR; RELAXATION; MODEL

Authors

Lutz, P.; Aguila, D.; Mondal, A.; Pinkowicz, D.; Marx, R.; Neugebauer, P. ; Fak, B. ; Ollivier, J.; Clerac, R. ; van Slageren, J

Released

14. 9. 2017

ISBN

1098-0121

Periodical

PHYSICAL REVIEW B

Year of study

96

Number

9

State

United States of America

Pages from

094415

Pages to

094415

Pages count

3

BibTex

@article{BUT146431,
  author="Lutz, P. and Aguila, D. and Mondal, A. and Pinkowicz, D. and Marx, R. and Neugebauer, P. and Fak, B. and Ollivier, J. and Clerac, R. and van Slageren, J",
  title="Elementary excitations in single-chain magnets",
  journal="PHYSICAL REVIEW B",
  year="2017",
  volume="96",
  number="9",
  pages="094415--094415",
  doi="10.1103/PhysRevB.96.094415",
  issn="1098-0121"
}