Zobrazeno 1 - 10
of 536
pro vyhledávání: '"Magnani N."'
Autor:
Magnani, N., Eloirdi, R., Wilhelm, F., Colineau, E., Griveau, J. -C., Shick, A. B., Lander, G. H., Rogalev, A., Caciuffo, R.
Publikováno v:
Phys. Rev. Lett. 119, 157204 (2017)
We have measured X-ray magnetic circular dichroism (XMCD) spectra at the Pu $M_{4,5}$ absorption edges from a newly-prepared high-quality single crystal of the heavy fermion superconductor $^{242}$PuCoGa$_{5}$, exhibiting a critical temperature $T_{c
Externí odkaz:
http://arxiv.org/abs/1709.04810
Publikováno v:
Phys. Rev. B 95, 245103 (2017)
We present resonant x-ray emission spectroscopic (RXES) data from the uranium intermetallics UPd$_3$, USb, USn$_3$ and URu$_2$Si$_2$, at the U $M_{4,5}$ edges and compare the data to those from the well-localized $5f^2$ semiconductor UO$_2$. The tech
Externí odkaz:
http://arxiv.org/abs/1706.02920
Autor:
Eloirdi, R., Giacobbe, C., Celdran, P. Amador, Magnani, N., Lander, G. H., Griveau, J. -C., Colineau, E., Miyake, K., Caciuffo, R.
Publikováno v:
Physical Review B 95, 094517 (2017)
We have performed high-resolution powder x-ray diffraction measurements on a sample of $^{242}$PuCoGa$_{5}$, the heavy-fermion superconductor with the highest critical temperature $T_{c}$ = 18.7 K. The results show that the tetragonal symmetry of its
Externí odkaz:
http://arxiv.org/abs/1703.08984
Autor:
Maldonado, P., Paolasini, L., Oppeneer, P. M., Forrest, T. R., Prodi, A., Magnani, N., Bosak, A., Lander, G. H., Caciuffo, R.
Publikováno v:
Phys. Rev. B 93, 144301 (2016)
We report an experimental and theoretical investigation of the lattice dynamics and thermal properties of the actinide dioxide NpO$_2$. The energy-wavevector dispersion relation for normal modes of vibration propagating along the $[001]$, $[110]$, an
Externí odkaz:
http://arxiv.org/abs/1603.06882
Autor:
Naji, M., Magnani, N., Bonales, L. J., Mastromarino, S., Colle, J. -Y., Cobos, J., Manara, D.
Publikováno v:
Phys. Rev. B 95, 104307 (2017)
The Raman spectrum of plutonium dioxide is studied both experimentally and theoretically. Particular attention has been devoted to the identification of high-energy modes at $2120$ cm$^{-1}$ and $2625$ cm$^{-1}$, the attribution of which has so far b
Externí odkaz:
http://arxiv.org/abs/1603.03256
Autor:
Magnani, N., Caciuffo, R., Wilhelm, F., Colineau, E., Eloirdi, R., Griveau, J. -C., Rusz, J., Oppeneer, P. M., Rogalev, A., Lander, G. H.
Publikováno v:
PRL 114, 097203 (2015)
Trivalent americium has a non-magnetic ($J$ = 0) ground state arising from the cancelation of the orbital and spin moments. However, magnetism can be induced by a large molecular field if Am$^{3+}$ is embedded in a ferromagnetic matrix. Using the tec
Externí odkaz:
http://arxiv.org/abs/1502.05604
Autor:
Hen, A., Colineau, E., Eloirdi, R., Griveau, J. -C., Magnani, N., Wilhelm, F., Rogalev, A., Sanchez, J. -P., Shick, A. B., Halevy, I., Orion, I., Caciuffo, R.
Publikováno v:
Phys. Rev. B 90, 054408 (2014)
We present the result of an extended experimental characterization of the hexagonal intermetallic Haucke compound NpNi$_{5}$. By combining macroscopic and shell-specific techniques, we determine the 5$f$-shell occupation number $n_f$ close to 4 for t
Externí odkaz:
http://arxiv.org/abs/1407.6825
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
Autor:
Lim, J. A., Blackburn, E., Magnani, N., Hiess, A., Regnault, L. -P., Caciuffo, R., Lander, G. H.
The spin waves in the multi-k antiferromagnet, USb, soften and become quasielastic well below the AFM ordering temperature, T_N. This occurs without a magnetic or structural transition. It has been suggested that this change is in fact due to de-phas
Externí odkaz:
http://arxiv.org/abs/1301.6009
Publikováno v:
Phys. Rev. B 76, 100404(R) (2007)
We report the results of inelastic neutron scattering experiments on NpCoGa$_{5}$, an isostructural analogue of the PuCoGa$_{5}$ superconductor. Two energy scales characterize the magnetic response in the antiferromagnetic phase. One is related to a
Externí odkaz:
http://arxiv.org/abs/0706.2524