title: Frequency-domain Fourier-transform terahertz spectroscopy of the single-molecule magnet (NEt4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN)6].
abstract: We have investigated the novel single-molecule magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)] (1; 5-Brsalen = N,N'-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations. We find that the new compound 1 exhibits much weaker intermolecular interactions than found in the closely related compound: K[Mn(2)(5-Brsalen)(2)(H(2)O)(2)Cr(CN)(6)] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.
authors: Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany. jan.dreiser@psi.ch
authors: Jan
authors: J
authors: Dreiser
authors: Alexander
authors: A
authors: Schnegg
authors: Karsten
authors: K
authors: Holldack
authors: Kasper S
authors: KS
authors: Pedersen
authors: Magnus
authors: M
authors: Schau-Magnussen
authors: Joscha
authors: J
authors: Nehrkorn
authors: Philip
authors: P
authors: Tregenna-Piggott
authors: Hannu
authors: H
authors: Mutka
authors: Høgni
authors: H
authors: Weihe
authors: Jesper
authors: J
authors: Bendix
authors: Oliver
authors: O
authors: Waldmann