159 citations · 938 across the 14 of their papers we have counts for
11 papers · 1 filter
Spin Noise Fluctuations from Paramagnetic Molecular Adsorbates on Surfaces
Paolo Messina, Matteo Mannini, Andrea Caneschi +6
The measurement of spin noise in nuclei was pioneered on bulk samples more than two decades ago. An ensemble of spins can produce a coherent signal at the frequency of a static mag…
Spin frustration effects in an odd-member antiferromagnetic ring and the magnetic Moebius strip
Olivier Cador, Dante Gatteschi, Roberta Sessoli +3
The magnetic properties of the first odd-member antiferromagnetic ring comprising eight chromium(III) ions, S=3/2 spins, and one nickel(II) ion, S=1 spin, are investigated. The rin…
Finite-Size effects in "Single Chain Magnets": an experimental and theoretical study
L. Bogani, A. Caneschi, M. Fedi +7
The problem of finite size effects in s=1/2 Ising systems showing slow dynamics of the magnetization is investigated introducing diamagnetic impurities in a Co-radical chain…
The origin of second-order transverse magnetic anisotropy in Mn12-acetate
A. Cornia, R. Sessoli, L. Sorace +3
The problem of the role of transverse fields in Mn12-acetate, a molecular nanomagnet, is still open. We present structural evidences that the disorder of the acetic acid of crystal…
Single-Crystal High-Frequency EPR Investigation of a Tetranuclear Iron(III) Single-Molecule Magnet
August Bouwen, Andrea Caneschi, Dante Gatteschi +4
A high-frequency (95 GHz) EPR study is reported on single crystals of the planar tetranuclear complex Fe4(OCH3)6(dpm)6 (where Hdpm = dipivaloylmethane), which has been previously s…
Tuning of the magnetic properties of the high spin molecular cluster Fe8
A. L. Barra, F. Bencini, A. Caneschi +5
The synthesis, crystal structure and magnetic characterization of a high spin cluster comprising eight iron ions, are presented in this contribution. The cluster has formula [(tacn…
X-ray magnetic circular dichroism spectra on the superparamagnetic transition metal-ion clusters [Mn12O12(CH3COO)16(H2O)24].2CH3COOH.4H2O (Mn12) and [Fe8O2(OH)12(tacn)6]Br8 9H2O (Fe8)
Paolo Ghigna, Andrea Campana, Alessandro Lascialfari +4
The first X-ray magnetic circular dichroism (XMCD) spectra on the title compounds are presented. In Mn12 the Mn(III) and Mn(IV) contributions are clearly apparent and evidence the…
Reply to the Comment of Chudnovski and Garanin on Phonon assisted Tunneling in Mn_{12} (PRL 83, 416 (1999))
G. Bellessa, N. Vernier, B. Barbara +1
We reply to the comment of Chudnovsky and Garanin on the tunneling rate in Mn_{12}.
High Frequency EPR Spectra of [Fe8O2(OH)12(tacn)6]Br8. A Critical Appraisal of the Barrier for the Reorientation of the Magnetization in Single Molecule Magnets
Anne Laure Barra, Dante Gatteschi, Roberta Sessoli
A detailed multifrequency high field - high frequency EPR (95-285 GHz) study has been performed on the single-molecule magnet of formula [Fe8O2(OH)12(tacn)6]Br8 9H2O, where tacn=1,…
Nonadiabatic Landau Zener tunneling in Fe_8 molecular nanomagnets
W. Wernsdorfer, R. Sessoli, A. Caneschi +2
The Landau Zener method allows to measure very small tunnel splittings Δin molecular clusters Fe_8. The observed oscillations of Δas a function of the magnetic field applied along…
Nuclear spin driven resonant tunnelling of magnetisation in Mn12 acetate
W. Wernsdorfer, R. Sessoli, D. Gatteschi
Current theories still fail to give a satisfactory explanation of the observed quantum phenomena in the relaxation of the magnetisation of the molecular cluster Mn12 acetate. In th…