Intrinsic ferromagnetic impurity phases in SmFeAsO1-xFx detected by muSR (2009)
Sanna, S., De Renzi, R., Lamura, G., Ferdeghini, C., Martinelli, A., Palenzona, A., ...
We report about muSR measurements on SmFeAsO1-xFx which helped us to identify the signature of diluted ferromagnetic inclusions, ubiquitous in the iron pnictides. These impurities are characterized...
Experimental evidence of chemical-pressure-controlled superconductivity in cuprates (2009)
Sanna, S., Agrestini, S., Zheng, K., De Renzi, R., Saini, N. L.
X-ray absorption spectroscopy (XAS) and high resolution X-ray diffraction are combined to study the interplay between electronic and lattice structures in controlling the superconductivity in...
Sanna, S., De Renzi, R., Lamura, G., Ferdeghini, C., Palenzona, A., Putti, M., ...
We present muSR investigations on SmFeAsO_1-xF_x showing coexistence of magnetism and superconductivity only in a very narrow F-doping range. The analysis of the muon asymmetry demonstrates that the...
Common variants at ten loci modulate the QT interval duration in the QTSCD Study (2009)
Pfeufer, A., Sanna, S., Arking, D. E., Müller, M., Gateva, V., Fuchsberger, C., ...
Evidence of orbital reconstruction at interfaces in La0.67Sr0.33MnO3 films (2007)
Tebano, A, Aruta, C., Sanna, S., Medaglia, P. G., Balestrino, G., Sidorenko, A. A., ...
Electronic properties of transition metal oxides at interfaces are influenced by strain, electric polarization and oxygen diffusion. Linear dichroism (LD) x-ray absorption, diffraction, transport and...
Evidence of two distinct charge carriers in underdoped high Tc cuprates (2007)
Sanna, S., Coneri, F., Rigoldi, A., Concas, G., De Renzi, R.
We present results on heavily underdoped Y_1-xCa_xBa_2Cu_3O_6+y which provide the evidence that the doping mechanism (cation substitution or oxygen loading) directly determines whether the...
Self-Interaction and Strong Correlation in DFTB (2007)
Hourahine, B.*, Sanna, S., Aradi, B., Kohler, C., Niehaus, T., Frauenheim, T.
The density functional based tight-binding (DFTB) method can benefit substantially from a number of developments in density functional theory (DFT) while also providing a simple analytical proving...
Self-Interaction and Strong Correlation in DFTB (2007)
Hourahine, B., Sanna, S., Aradi, B., Kohler, C., Niehaus, T., Frauenheim, T.
The density functional based tight-binding (DFTB) method can benefit substantially from a number of developments in density functional theory (DFT) while also providing a simple analytical proving...
Self-Interaction and Strong Correlation in DFTB (2007)
Hourahine, B., Sanna, S., Aradi, B., Kohler, C., Niehaus, T., Frauenheim, T.
The density functional based tight-binding (DFTB) method can benefit substantially from a number of developments in density functional theory (DFT) while also providing a simple analytical proving...
Density-functioal based tight-binding study of small gold clusters (2006)
Koskinen, P., Häkkinen, H., Seifert, G., Sanna, S., Frauenheim, T., Moseler, M.
In this paper, we report the ability of self-consistent-charge density-functional based tight-binding method to describe small gold clusters. We concentrate our investigations mainly on anions, and...
Density-functional based tight-binding study of small gold clusters (2006)
Koskinen, P., Häkkinen, H., Seifert, G., Sanna, S., Frauenheim, T., Moseler, M.
In this paper, we report the ability of self-consistent-charge density-functional based tight-binding method to describe small gold clusters. We concentrate our investigations mainly on anions, and...
Density-functional based tight-binding study of small gold clusters (2006)
Koskinen, P., Häkkinen, H., Seifert, G., Sanna, S., Frauenheim, T., Moseler, M.
In this paper, we report the ability of self-consistent-charge density-functional based tight-binding method to describe small gold clusters. We concentrate our investigations mainly on anions, and...
Nanoscopic coexistence of magnetism and superconductivity in YBa2Cu3O6+x detected by MuSR (2004)
Sanna, S., Allodi, G., Concas, G., Hillier, A. H., De Renzi, R.
We performed zero and transverse field MuSR experiments on a large number of YBa2Cu3O6+x samples. We detect coexistence of antiferro-type (AF) short range magnetism with superconductivity below...
Manca, P., Calestani, G., Migliori, A., De Renzi, R., Allodi, G., Sanna, S.
The oxygen-order dependent emergence of superconductivity in YBa2Cu3O6+x is studied, for the first time in a comparative way, on pair samples having the same oxygen content and thermal history, but...
Studio batteriologico in vivo sugli effetti della mordenzatura acida nei fondi cavitari (1998)
Lugliè, Pietrina Francesca, Delitala, P. P., Zanetti, Stefania Anna Lucia, Sanna, S.
BACKGROUND AND AIMS: The authors evaluate the effect of etching on the presence of bacterial colonies at the bottom of sockets. METHODS: For this purpose, 19 molars with first class carious lesions...