Rotational bands in open antiferromagnetic rings : a neutron spectroscopy study of Cr8Zn (2009)
Carretta, S, Santini, P, Amoretti, G, Guidi, T, Qiu, Y, Copley, JRD, ...
Low-lying excitations in closed antiferromagnetic rings can be described in terms of rotational bands, which reflect the peculiar internal spin structure of the corresponding eigenstates. Here we use...
Magnetization and spin dynamics of a Cr-based magnetic cluster: Cr$_{7}$Ni (2008)
Bianchi, A., Carretta, S., Santini, P., Amoretti, G., Furukawa, Y., Kiuchi, K., ...
We study the magnetization and the spin dynamics of the Cr$_7$Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations...
Neutron spectroscopy and magnetic relaxation of the Mn$_6$ nanomagnets (2008)
Carretta, S., Guidi, T., Santini, P., Amoretti, G., Pieper, O., Lake, B., ...
Inelastic neutron scattering has been used to determine the microscopic Hamiltonian describing two high-spin variants of the high-anisotropy Mn$_6$ nanomagnet. The energy spectrum of both systems is...
Inelastic neutron scattering investigations of molecular nanomagnets (2008)
Amoretti, G, Caciuffo, R, Carretta, S, Guidi, T, Magnani, N, Santini, P
Inelastic neutron scattering, probing the temporal spin-spin correlation at the microscopic scale, is a powerful technique to study the magnetic behaviour of molecular nanomagnets. Experiments at...
Neutron spectroscopy and magnetic relaxation of the Mn6 nanomagnets (2008)
Guidi, T, Santini, P, Amoretti, G, Pieper, O, Lake, B, Van Slageren, J, ...
Inelastic neutron scattering has been used to determine the microscopic Hamiltonian describing two high-spin variants of the high-anisotropy Mn6 nanomagnet. The energy spectrum of both systems is...
Quantum oscillations of the total spin in a heterometallic antiferromagnetic ring (2008)
Carretta, S, Santini, P, Amoretti, G, Caciuffo, R, Heiss, A, Copley, JRD, ...
Topology and spin dynamics in magnetic molecules (2005)
Carretta, S., Santini, P., Amoretti, G., Affronte, M., Ghirri, A., Sheikin, I., ...
Topology and spin dynamics in magnetic molecules (2004)
Carretta, S., Santini, P., Amoretti, G., Affronte, M., Ghirri, A., Sheikin, I., ...
We investigate the role of topology and distortions in the quantum dynamics of magnetic molecules, using a cyclic spin system as reference. We consider three variants of antiferromagnetic molecular...
Caciuffo, R., Guidi, T., Amoretti, G., Carretta, S., Liviotti, E., Santini, P., ...
Inelastic neutron scattering has been applied to the study of the spin dynamics of Cr-based antiferromagnetic octanuclear rings where a finite total spin of the ground state is obtained by...
A perturbative approach to J mixing in f-electron systems: Application to actinide dioxides (2004)
Magnani, N., Santini, P., Amoretti, G., Caciuffo, R.
We present a perturbative model for crystal-field calculations, which keeps into account the possible mixing of states labelled by different quantum number J. Analytical J-mixing results are obtained...
Quantum-gate implementation in permanently coupled AF spin rings without need of local fields (2004)
Troiani, F., Affronte, M., Carretta, S., Santini, P., Amoretti, G.
We propose a scheme for the implementation of quantum gates which is based on the qubit encoding in antiferromagnetic molecular rings. We show that a proper engineering of the intercluster link would...
Magnani, N., Carretta, S., Amoretti, G., Pareti, L., Paoluzi, A., Caciuffo, R., ...
The fundamental magnetic interactions of Pr$_{2}$Fe$_{17}$ are studied by inelastic neutron scattering and anisotropy field measurements. Data analysis confirms the presence of three magnetically...
NMR as a probe of the relaxation of the magnetization in magnetic molecules (2004)
Santini, P., Carretta, S., Liviotti, E., Amoretti, G., Carretta, P., Filibian, M., ...
We investigate the time autocorrelation of the molecular magnetization $M(t)$ for three classes of magnetic molecules (antiferromagnetic rings, grids and nanomagnets), in contact with the phonon heat...
Molecular engineering of antiferromagnetic rings for quantum computation (2004)
Troiani, F., Ghirri, A., Affronte, M., Carretta, S., Santini, P., Amoretti, G., ...
The substitution of one metal ion in a Cr-based molecular ring with dominant antiferromagnetic couplings allows to engineer its level structure and ground-state degeneracy. Here we characterize a...
S-mixing and quantum tunneling of the magnetization in molecular nanomagnets (2004)
Carretta, S., Liviotti, E., Magnani, N., Santini, P., Amoretti, G.
The role of $S$-mixing in the quantum tunneling of the magnetization in nanomagnets has been investigated. We show that the effect on the tunneling frequency is huge and that the discrepancy (more...
Quantum-magneto oscillations in a supramolecular Mn(II)-[3 x 3] grid (2004)
Waldmann, O., Carretta, S., Santini, P., Koch, R., Jansen, A. G. M., Amoretti, G., ...
The magnetic grid molecule Mn(II)-[3 x 3] has been studied by high-field torque magnetometry at 3He temperatures. At fields above 5 T, the torque vs. field curves exhibit an unprecedented oscillatory...
Inter-multiplet transitions in the Fe4 magnetic cluster (2004)
Guidi, T, Amoretti, G, Caciuffo, R, Carretta, S, Cornia, A, Frost, C D, ...
Inelastic neutron scattering study of magnetic excitations in uranium phosphates (2004)
Magnani, N, Amoretti, G, Blaise, A, Caciuffo, R, Dacheux, N, Genet, M, ...
Inelastic neutron scattering study of the molecular grid nanomagnet Mn-[3x3] (2004)
Guidi, T, Carretta, S, Santini, P, Liviotti, E, Magnani, N, Mondelli, C, ...
Inelastic neutron scattering study of magnetic excitations in uranium phosphates (2004)
Magnani, N., Amoretti, G., Blaise, A., Caciuffo, R., Dacheux, N., Genet, M., ...
The results of inelastic neutron scattering experiments performed on the compounds U1−xThx(UO2)(PO4)2 (x=0,0.5) and U2O(PO4)2 are presented. The partial substitution of uranium with thorium in...
Inelastic neutron scattering study of magnetic excitations in uranium phosphates (2004)
Magnani, N., Amoretti, G., Blaise, A., Caciuffo, R., Dacheux, N., Genet, M., ...
The results of inelastic neutron scattering experiments performed on the compounds U1−xThx(UO2)(PO4)2 (x=0,0.5) and U2O(PO4)2 are presented. The partial substitution of uranium with thorium in...
Quantum magneto-oscillations in a supramolecular Mn(II)-[3x3] grid (2004)
Waldmann, O., Carretta, S., Santini, P., Koch, R., Jansen, A. G. M., Amoretti, G., ...
The magnetic grid molecule Mn(II)-[3x3] has been studied by high-field torque magnetometry at He-3 temperatures. At fields above 5 T, the torque versus field curves exhibit an unprecedented...
Level crossing in a molecular Cr8 ring (2004)
Affronte, M., Guidi, T., Caciuffo, R., Carretta, S., Amoretti, G., Hinderer, J., ...
The heat capacity of a molecular Cr-8 ring was measured as a function of temperature and magnetic field in order to follow the evolution of the Schottky anomaly through the first (S = 0 to \1, - I >)...
Carretta, S., Santini, P., Liviotti, E., Magnani, N., Caciuffo, R., Guidi, T., ...
Molecular nanomagnets, besides promising to open new frontiers in technology, have attracted huge interest in the scientific community because they can exhibit the phenomenon known as quantum...
Mixing of magnetic states in a Cr8 molecular ring (2003)
Affronte, M., Guidi, T., Caciuffo, R., Carretta, S., Amoretti, G., Hinderer, J., ...
Phase diagram of low doping manganites (2000)
De Renzi, R, Allodi, G, Amoretti, G, Cestelli Guidi, M, Fanesi, S, Guidi, G, ...
Magnetization and susceptibility of the Kondo compounds CeCu5-xAlx, x = 0, 1, 1.5, 2. (1998)
Bauer, E., Amoretti, G., Andreani, L. C., Delley, B., Ellerby, M., McEwen, K., ...
Molecular dynamics and tunnelling in supramolecular complexes (1997)
Caciuffo, R, Amoretti, G, Carlile, C J, Ferrero, C, Geremia, S, Paci, B, ...
The vibrational spectrum of C60 in the calix[8]arene(1:1)C60 complex (1997)
Paci, B, Amoretti, G, Ruani, G, Shinkai, S, Suzuki, T, Ugozzoli, F, ...
Neutron scattering investigations of high-Tc superconductors (1996)
Amoretti, G, Caciuffo, R, Moze, O
in High Temperature Superconductivity, Models and Measurements, Ed M Acquarone (World Scientific) p533 (1996)
Amoretti, G, Blaise, A, Bonnet, M, Caciuffo, R, Erdos, P, Noel, H, ...
Neutron spectroscopy studies of the crystal field interaction in RET4Al8 compounds (1995)
Caciuffo, R, Amoretti, G, Buschow, K H J, Moze, O, Murani, A, Paci, B
Methyl group tunnelling studies in calixarenes (1994)
Caciuffo, R, Amoretti, G, Carlile, C J, Fillaux, F, Francescangeli, O, Prager, M, ...
Molecular tunnelling in p-tert-butylcalix[4]arene(2:1)p-xylene (1994)
Prager, M, Caciuffo, R, Amoretti, G, Carlile, C J, Coddens, G, Fillaux, F, ...
Crystal field excitations and gap opening in Tm:YBa2Cu4O8 by inelastic neutron scattering (1994)
Amoretti, G, Caciuffo, R, Santini, P, Francescangeli, O, Goremychkin, E A, Osborn, R, ...
Local configurations in ErBa2Cu3O6+x for 0.15 (1994)
Varotto, M, Amoretti, G, Bucci, C, De Renzi, R, Guidi, G, Jang, S, ...
Neutron scattering investigation of the electronic ground state of neptunium dioxide (1992)
Amoretti, G, Blaise, A, Caciuffo, R, Di Cola, D, Fournier, J M, Hutchings, M T, ...
Neutron inelastic experiments on actinide dioxides: Search for crystal field excitations (1992)
Caciuffo, R, Amoretti, G, Blaise, A, Fournier, J M, Hutchings, M T, Lander, G H, ...
Moze, O, Caciuffo, R, Amoretti, G, Coly, J M D, Li, H S, Hu, B P
Proceedings of the VII International Symposium of Magnetic Anistropy and Coercivity in Rare-earth transition metal alloys (1992) (Canberra,Australia, July 1992)
Evidence of a lattice distortion in NpO2 below 25K from neutron magnetic inelastic scattering (1991)
Caciuffo, R, Amoretti, G, Fournier, J M, Blaise, A, Osborn, R, Taylor, A D, ...
in Magnetic Properties of Matter, Eds G Asti, D Fiorani, F Lucari, (World Scientific, Singapore) 142 (1991)
High-energy-neutron spectroscopy of crystal-field excitations in NpO2 (1991)
Fournier, J M, Blaise, A, Amoretti, G, Caciuffo, R, Larroque, J, Hutchings, M T, ...
HIGH-ENERGY NEUTRON SPECTROSCOPY OF CRYSTAL FIELD EXCITATIONS IN Np O-2 (1989)
Fournier, J M, Blaise, A, Amoretti, G, Caciuffo, R, Larroque, J, Hutchings, M T, ...
High energy neutron spectroscopy in crystal field split 5f systems (1989)
Amoretti, G, Caciuffo, R, Blaise, A, Fournier, J M, Hutchings, M T, Osborn, R, ...
5f-electron states in uranium dioxide investigated using high resolution neutron spectroscopy (1989)
Amoretti, G, Blaise, A, Caciuffo, R, Fournier, J M, Hutchings, M T, Osborn, R, ...
A neutron spectroscopy study of magnetic excitations in uranium oxysulphide (1989)
Amoretti, G, Blaise, A, Caciuffo, R, Fournier, J M, Larroque, J, Osborn, R
High resolution neutron spectroscopy of crystal-field excitations in uranium dioxide (1988)
Osborn, R, Taylor, A D, Bowden, Z A, Hackett, M A, Hayes, W, Hutchings, M T, ...
Caciuffo, R, Amoretti, G, Blaise, A, Fournier, J M, Hutchings, M T, Larroque, J, ...
Proc Int Conf on Neutron Scattering at ISIS: Recent highlights in Condensed Matter Research, Roma 14-16 December (1988)
Crystal field excitations in UOS (1988)
Amoretti, G, Blaise, A, Fournier, J M, Caciuffo, R, Larroque, J, Osborn, R, ...
A NEUTRON SPECTROSCOPY STUDY OF MAGNETIC EXCITATIONS IN URANIUM OXYSULFIDE (1988)
Amoretti, G, Blaise, A, Caciuffo, R, Fournier, J M, Larroque, J, Osborn, R
The Stevens factors α, β and γ have been calculated in the intermediate coupling scheme for the ground state of the actinide ions U 4+, U3+, Np4+ and Np3+. The results are discussed in...
The Stevens factors α, β and γ have been calculated in the intermediate coupling scheme for the ground state of the actinide ions U 4+, U3+, Np4+ and Np3+. The results are discussed in...
The Stevens factors α, β and γ have been calculated in the intermediate coupling scheme for the ground state of the actinide ions U 4+, U3+, Np4+ and Np3+. The results are discussed in...
MAGNETIC FORM FACTOR OF NpAs2 : A CRYSTAL FIELD WAVE FUNCTION FOR 5f ELECTRONS ? (1982)
Amoretti, G., Blaise, A., Bonnet, M., Boucherle, J., Delapalme, A., Fournier, J., ...
Neptunium magnetic form factor measurements in the ferromagnetic phase of NpAs2 (T = 4.2 K, H = 4.6 T) are analysed under different assumptions : Np3+, Np4+ or Np5+, with a free ion wave-function...
MAGNETIC FORM FACTOR OF NpAs2 : A CRYSTAL FIELD WAVE FUNCTION FOR 5f ELECTRONS ? (1982)
Amoretti, G., Blaise, A., Bonnet, M., Boucherle, J., Delapalme, A., Fournier, J., ...
Neptunium magnetic form factor measurements in the ferromagnetic phase of NpAs2 (T = 4.2 K, H = 4.6 T) are analysed under different assumptions : Np3+, Np4+ or Np5+, with a free ion wave-function...
MAGNETIC FORM FACTOR OF NpAs2 : A CRYSTAL FIELD WAVE FUNCTION FOR 5f ELECTRONS ? (1982)
Amoretti, G., Blaise, A., Bonnet, M., Boucherle, J., Delapalme, A., Fournier, J., ...
Neptunium magnetic form factor measurements in the ferromagnetic phase of NpAs2 (T = 4.2 K, H = 4.6 T) are analysed under different assumptions : Np3+, Np4+ or Np5+, with a free ion wave-function...