Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Medaglia, P. G."'
Autor:
Di Castro, D., Salvato, M., Tebano, A., Innocenti, D., Aruta, C., Prellier, W., Lebedev, O. I., Ottaviani, I., Brookes, N. B., Minola, M., Sala, M. Moretti, Mazzoli, C., Medaglia, P. G., Ghiringhelli, G., Cirillo, L. Braicovich M., Balestrino, G.
Publikováno v:
Phys. Rev. B 86, 134524 (2012)
We report the occurrence of superconductivity, with maximum Tc = 40 K, in superlattices (SLs) based on two insulating oxides, namely CaCuO2 and SrTiO3. In these (CaCuO2)n/(SrTiO3)m SLs, the CuO2 planes belong only to CaCuO2 block, which is an antifer
Externí odkaz:
http://arxiv.org/abs/1107.2239
Autor:
Sala, M. Moretti, Bisogni, V., Aruta, C., Balestrino, G., Berger, H., Brookes, N. B., de Luca, G. M., Castro, D. Di., Grioni, M., Guarise, M., Medaglia, P. G., Granozio, F. Miletto, Minola, M., Perna, P., Radovic, M., Salluzzo, M., Schmitt, T., Zhou, K. J., Braicovich, L., Ghiringhelli, G.
Publikováno v:
New J. Phys. 13 (2011) 043026
We measured high resolution Cu $L_3$ edge resonant inelastic x-ray scattering (RIXS) of the undoped cuprates La$_2$CuO$_4$, Sr$_2$CuO$_2$Cl$_2$, CaCuO$_2$ and NdBa$_2$Cu$_3$O$_6$. The dominant spectral features were assigned to $dd$ excitations and w
Externí odkaz:
http://arxiv.org/abs/1009.4882
Autor:
Braicovich, L., Ament, L. J. P., Bisogni, V., Forte, F., Aruta, C., Balestrino, G., Brookes, N. B., De Luca, G. M., Medaglia, P. G., Granozio, F. Miletto, Radovic, M., Salluzzo, M., Brink, J. van den, Ghiringhelli, G.
In the early days of high temperature superconductivity it was already recognized that magnetic properties of these materials are intimately related to the superconducting ones . When doped, the long-range ordered antiferromagnetic background of pris
Externí odkaz:
http://arxiv.org/abs/0807.1140
Autor:
Freelon, B., Medaglia, P. G., Tebano, A., Balestrino, G., Okada, K., Kotani, A., Vernay, F., Devereaux, T. P., Glans, P. A., Learmonth, T., Smith, K. E., Kilcoyne, A. L. D., Rude, B., Furtado, I., Guo, J. -H.
We report the first observation of soft-x-ray scattering from spin fluctuations in a high-Tc parent compound. An antiferromagnetic charge transfer insulator, CaCuO2, was irradiated by Cu M-edge soft x-rays. Ultra-high resolution measurements of scatt
Externí odkaz:
http://arxiv.org/abs/0806.4432
Autor:
Tebano, A, Aruta, C., Sanna, S., Medaglia, P. G., Balestrino, G., Sidorenko, A. A., De Renzi, R., Ghiringhelli, G., Braicovich, L., Bisogni, V., Brookes, N. B.
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 magnetization on thin La0.7Sr0.3MnO3 films, allow
Externí odkaz:
http://arxiv.org/abs/0708.3973
Autor:
Tafuri, F., Kirtley, J. R., Born, D., Stornaiuolo, D., Medaglia, P. G., Orgiani, P., Balestrino, G., Kogan, V. G.
We have made current-voltage (IV) measurements of artificially layered high-$T_c$ thin-film bridges. Scanning SQUID microscopy of these films provides values for the Pearl lengths $\Lambda$ that exceed the bridge width, and shows that the current dis
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504140
We have used scanning SQUID magnetometry to image vortices in ultra-thin [Ba$_{0.9}$Nd$_{0.1}$CuO$_{2+x}$]$_m$/[CaCuO$_2$]$_n$ (CBCO) high temperature superconductor samples, with as few as three superconducting CuO$_2$ planes. The Pearl lengths ($\L
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402667
Publikováno v:
Physical Review B 68 (2003) 094517
We have investigated the charge transfer mechanism in artificial superlattices by Seebeck effect measurements. Such a technique allows a precise determination of the amount of charge transferred on each CuO2 plane. A systematic characterization of th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402329
Autor:
Balestrino, G., Lavanga, S., Martellucci, S., Medaglia, P. G., Paoletti, A., Pasquini, G., Petrocelli, G., Tebano, A., Tucciarone, A.
Pulsed Laser Deposition in molecular-beam epitaxy environment (Laser-MBE) has been used to grow high quality BaCuOx/CaCuO2 superlattices. In situ Reflection High Energy Electron Diffraction (RHEED) shows that the growth mechanism is 2-dimensional. Fu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0007432
Autor:
Balestrino, G., Lavanga, S., Martellucci, S., Medaglia, P. G., Paoletti, A., Pasquini, G., Petrocelli, G., Tebano, A., Varlamov, A. A., Maritato, L., Salvato, M.
The electrical transport properties of [BaCuO_x]_2/[CaCuO_2]_n (CBCCO-2xn)underdoped high temperature superconducting superlattices grown by Pulsed Laser Deposition have been investigated. Starting from the optimally doped CBCCO-2x2 superlattice, hav
Externí odkaz:
http://arxiv.org/abs/cond-mat/0006023