Zobrazeno 1 - 10
of 722
pro vyhledávání: '"Marezio, M"'
Autor:
Gauzzi, A., Klein, Y., Nisula, M., Karppinen, M., Biswas, P. K., Saadaoui, H., Morenzoni, E., Manuel, P., Khalyavin, D., Marezio, M., Geballe, T. H.
Publikováno v:
Physical Review B 94, 180509(R) (2016)
By means of magnetization, specific heat and muon-spin relaxation measurements, we investigate high-pressure oxidized \mohpo, in which overdoping is achieved up to $p \sim 0.45$ hole/Cu, well beyond the $T_c - p$ superconducting dome of cuprates, whe
Externí odkaz:
http://arxiv.org/abs/1612.04707
Autor:
Prodi, A., Daoud-Aladine, A., Gozzo, F., Schmitt, B., Lebedev, O., van Tendeloo, G., Gilioli, E., Bolzoni, F., Aruga-Katori, H., Takagi, H., Marezio, M., Gauzzi, A.
By means of synchrotron x-ray and electron diffraction, we studied the structural changes at the charge order transition $T_{CO}$=176 K in the mixed-valence quadruple perovskite (NaMn$_3$)Mn$_4$O$_{12}$. Below $T_{CO}$ we find satellite peaks indicat
Externí odkaz:
http://arxiv.org/abs/1410.2836
Evidence for High Tc cuprate superconductivity is found in a region of the phase diagram where non-superconducting Fermi liquid metals are expected. Cu valences estimated independently from both x-ray absorption near-edge structure (XANES) and bond v
Externí odkaz:
http://arxiv.org/abs/1207.4239
Autor:
Gauzzi, A., Rousse, G., Mezzadri, F., Calestani, G., André, G., Bourée, F., Calicchio, M., Gilioli, E., Cabassi, R., Bolzoni, F., Prodi, A., Bordet, P., Marezio, M.
Publikováno v:
Journal of Applied Physics 113, 043920 (2013)
By means of neutron powder diffraction, we investigated the effect of the polar Bi$^{3+}$ ion on the magnetic ordering of the Mn$^{3+}$ ions in BiMn$_3$Mn$_4$O$_{12}$, the counterpart with \textit{quadruple} perovskite structure of the \textit{simple
Externí odkaz:
http://arxiv.org/abs/1106.4455
Autor:
Geballe, T. H., Marezio, M.
We comment on the paper published by W.B. Gao, Q.Q. Liu, L.X. Yang, Y.Yu, F.Y. Li, C.Q. Jin and S. Uchida in Phys. Rev. B 80, 094523 (2009) and give alternate explanations for the enhanced superconductivity. The enhanced onset Tc of 98K observed upon
Externí odkaz:
http://arxiv.org/abs/1002.1725
Autor:
Geballe, T. H., Marezio, M.
A critical review of previous investigations of the superconductivity with enhanced Tc ~ 95K found in Sr2CuO4-v shows that new physics occurs in a highly overdoped region of the cuprate phase diagram. Moreover, evidence is adduced from the literature
Externí odkaz:
http://arxiv.org/abs/0904.2788
Autor:
Mezzadri, F., Calestani, G., Calicchio, M., Gilioli, E., Bolzoni, F., Cabassi, R., Marezio, M., Migliori, A.
We report on the high pressure synthesis of BiMn$_7$O$_{12}$, a manganite displaying a "quadruple perovskite" structure. Structural characterization of single crystal samples shows a distorted and asymmetrical coordination around the Bi atom, due to
Externí odkaz:
http://arxiv.org/abs/0810.0667
Autor:
Geballe, T. H., Marezio, M.
We have revisited data in the literature and find compelling reasons for believing that enhanced superconductivity occurs in Sr2CuO3+delta when about one third of the oxygen sites in the CuO2 layers are vacant, contrary to the almost universally acce
Externí odkaz:
http://arxiv.org/abs/0707.3349
The crystallographic (charge-ordered) and magnetic superstructures of La0.333Ca0.667MnO3 were studied by high-resolution synchrotron x-ray and neutron powder diffraction. In the antiferromagnetic structure, which was refined using a non-collinear mod
Externí odkaz:
http://arxiv.org/abs/cond-mat/9812366
Autor:
Radaelli, P. G., Marezio, M., Perroux, M., de Brion, S., Tholence, J. L., Huang, Q., Santoro, A.
Publikováno v:
Science, 1994 Jul . 265(5170), 380-383.
Externí odkaz:
https://www.jstor.org/stable/2884465
