Detail publikačního výsledku

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

Originální název

Elementary excitations in single-chain magnets

Anglický název

Elementary excitations in single-chain magnets

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

MOLECULE MAGNETS; BEHAVIOR; RELAXATION; MODEL

Klíčová slova v angličtině

MOLECULE MAGNETS; BEHAVIOR; RELAXATION; MODEL

Autoři

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

Vydáno

14.09.2017

ISSN

1098-0121

Periodikum

PHYSICAL REVIEW B

Svazek

96

Číslo

9

Stát

Spojené státy americké

Strany od

094415

Strany do

094415

Strany počet

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"
}