%0 Journal Article
%A Fu, Z.
%A Kögerler, P.
%A Rücker, U.
%A Su, Y.
%A Mittal, R.
%A Brückel, T.
%T An approach to the magnetic ground state of the molecular magnet {Mo72Fe30}
%J New journal of physics
%V 12
%@ 1367-2630
%C [Bad Honnef]
%I Dt. Physikalische Ges.
%M PreJuSER-12182
%P 083044
%D 2010
%Z Record converted from VDB: 12.11.2012
%X The nature of the magnetic ground state of the spin-frustrated molecular magnet {Mo72Fe30} is studied using polarized neutron scattering and specific heat methods. The magnetic scattering cross section up to 2.30 angstrom(-1) has been determined by means of diffuse neutron scattering with xyz polarization analysis at temperatures from 1.5 to 100 K. The spin correlations observed at 1.5 K agree well with the simulation based on the three-sublattice spin configuration model for {Mo72Fe30}. The specific heat of {Mo72Fe30} has been measured from 60 mK to 15 K under zero external magnetic field. The energy gaps, 0.09(1) and 0.64(1) meV, identified by the Schottky-type anomalies in the specific heat data are in reasonable agreement with the low-lying magnetic excitations predicted by the quantum rotational band model for the three-sublattice spin configuration model. Therefore, our experimental study provides strong support that the three-sublattice spin configuration model is a good approach to the magnetic ground state of {Mo72Fe30}.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000281279900003
%R 10.1088/1367-2630/12/8/083044
%U https://juser.fz-juelich.de/record/12182