Title: Low-energy Spectrum of a Tm-based Double-decker Complex
Authors: MAGNANI NicolaCACIUFFO RobertoCOLINEAU EricWASTIN FranckBARALDI A.BUFFAGNI E.CAPELLETTI R.CARRETTA S.MAZZERA M.ADROJA D. T.WATANABE M.NAKAMURA A.
Citation: PHYSICAL REVIEW B vol. 79 p. 104407
Publisher: AMER PHYSICAL SOC
Publication Year: 2009
JRC N°: JRC51004
ISSN: 1098-0121
URI: http://prb.aps.org/
http://publications.jrc.ec.europa.eu/repository/handle/JRC51004
DOI: 10.1103/PhysRevB.79.104407
Type: Contributions to Conferences
Abstract: The magnetic and electronic properties of a Tm-based ¿double-decker¿ phtalocyanine complex are extensively investigated by several spectroscopic optical absorption, inelastic neutron-scattering and bulk specific-heat techniques. The resulting low-energy spectrum is exploited to obtain direct information on the ligand field. We show that the literature value of the second-order parameter A2 0 is significantly overestimated and that the additional parameters arising from the true C4 point symmetry instead of the usually assumed ideal D4d symmetry at the rare-earth site cannot be neglected on this energy scale, while the presence of further symmetry reduction at low temperature is highly unlikely. The effect of the proposed ligand-field parameters on the relaxation properties of the Tb-based double-decker single-molecule magnet is briefly discussed.
JRC Institute:Institute for Transuranium Elements

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