Zobrazeno 1 - 10
of 570
pro vyhledávání: '"AMORETTI, G"'
Autor:
Chiesa, A., Guidi, T., Carretta, S., Ansbro, S., Timco, G. A., Vitorica-Yrezabal, I., Garlatti, E., Amoretti, G., Winpenny, R. E. P., Santini, P.
Publikováno v:
Phys. Rev. Lett. 119, 217202 (2017)
The discovery of magnetic bistability in Mn$_{12}$ more than 20 years ago marked the birth of molecular magnetism, an extremely fertile interdisciplinary field and a powerful route to create tailored magnetic nanostructures. However, the difficulty t
Externí odkaz:
http://arxiv.org/abs/2101.06161
Autor:
Caciuffo, R., Santini, P., Carretta, S., Amoretti, G., Hiess, A., Magnani, N., Regnault, L. -P., Lander, G. H.
Publikováno v:
Physical Review B 84, 104409 (2011)
We report the results of inelastic neutron scattering experiments performed with triple-axis spectrometers to investigate the low-temperature collective dynamics in the ordered phase of uranium dioxide. The results are in excellent agreement with the
Externí odkaz:
http://arxiv.org/abs/1312.5113
Publikováno v:
Physical Review Letters 111, 110501 (2013)
We introduce a scheme to perform quantum-information processing that is based on a hybrid spin-photon qubit encoding. The proposed qubits consist of spin-ensembles coherently coupled to microwave photons in coplanar waveguide resonators. The quantum
Externí odkaz:
http://arxiv.org/abs/1307.6474
Publikováno v:
Phys. Rev. Lett. 110, 157204 (2013)
We present a flexible and effective ab-initio scheme to build many-body models for molecular nanomagnets, and to calculate magnetic exchange couplings and zero-field splittings. It is based on using localized Foster-Boys orbitals as one-electron basi
Externí odkaz:
http://arxiv.org/abs/1211.3243
Autor:
Baker, M. L., Guidi, T., Carretta, S., Ollivier, J., Mutka, H., Güdel, H. U., Timco, G. A., McInnes, E. J. L., Amoretti, G., Winpenny, R. E. P., Santini, P.
Molecular nanomagnets are among the first examples of spin systems of finite size and have been test-beds for addressing a range of elusive but important phenomena in quantum dynamics. In fact, for short-enough timescales the spin wavefunctions evolv
Externí odkaz:
http://arxiv.org/abs/1208.4785
Publikováno v:
Phys. Rev. Lett. 107, 230502 (2011)
Quantum simulators are controllable systems that can be used to simulate other quantum systems. Here we focus on the dynamics of a chain of molecular qubits with interposed antiferromagnetic dimers. We theoretically show that its dynamics can be cont
Externí odkaz:
http://arxiv.org/abs/1111.5201
Autor:
Pieper, O., Guidi, T., Carretta, S., van Slageren, J., Hallak, F. El, Lake, B., Santini, P., Amoretti, G., Mutka, H., Koza, M., Russina, M., Schnegg, A., Milios, C. J., Brechin, E. K., Julia, A., Tejada, J.
We investigate the magnetic properties of three Mn$_6$ single molecule magnets by means of inelastic neutron scattering and frequency domain magnetic resonance spectroscopy. The experimental data reveal that small structural distortions of the molecu
Externí odkaz:
http://arxiv.org/abs/1003.0537
Autor:
Bianchi, A., Carretta, S., Santini, P., Amoretti, G., Furukawa, Y., Kiuchi, K., Ajiro, Y., Narumi, Y., Kindo, K., Lago, J., Micotti, E., Arosio, P., Lascialfari, A., Borsa, F., Timco, G., Winpenny, R. E. P.
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 and show that the spin Hamiltonian approach provid
Externí odkaz:
http://arxiv.org/abs/0808.2621
Autor:
Carretta, S., Guidi, T., Santini, P., Amoretti, G., Pieper, O., Lake, B., van Slageren, J., Hallak, F. El, Wernsdorfer, W., Mutka, H., Russina, M., Milios, C. J., Brechin, E. K.
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 characterized by the presence of several excited to
Externí odkaz:
http://arxiv.org/abs/0808.0979
Autor:
Carretta, S., Santini, P., Amoretti, G., Affronte, M., Ghirri, A., Sheikin, I., Piligkos, S., Timco, G., Winpenny, R. E. P.
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 ring, i.e. Cr$_8$, Cr$_7$Zn and Cr$_7$Ni, characteri
Externí odkaz:
http://arxiv.org/abs/cond-mat/0412628