10.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT156 papers
- Scuola Internazionale Superiore di Studi AvanzatiIT146 papers
- University of InsubriaIT88 papers
- University of MilanIT85 papers
- University of TrentoIT85 papers
- Politecnico di TorinoIT78 papers
- University of FlorenceIT74 papers
- University of GenoaIT69 papers
- Centre National de la Recherche ScientifiqueFR65 papers
- The Abdus Salam International Centre for Theoretical Physics (ICTP)IT65 papers
- National Research CouncilLK58 papers
- University of SalernoIT56 papers
18 papers · 2 filters
Evidences of vortex curvature and anisotropic pinning in superconducting films by quantitative magneto-optics
F. Laviano, D. Botta, A. Chiodoni +5
We present the experimental observation of magnetic field line curvature at the surface of a superconducting film by local quantitative magneto-optics. In addition to the knowledge…
Linear response function around a localized impurity in a superconductor
G. G. N. Angilella, F. E. Leys, N. H. March +1
Imaging the effects of an impurity like Zn in high-Tc superconductors [Nature 61 (2000) 746] has rekindled interest in defect problems in the superconducting phase. This has prompt…
The Tc amplification by quantum interference effects in diborides
Annette Bussmann-Holder, Antonio Bianconi
The model of two (s and p) channel superconductivity known to be necessary to explain the superconductivity in MgB2 has been applied to the Al1-xMgxB2 diborides by tuning x from Mg…
Thermal conductivity of MgB in the superconducting state
M. Putti, V. Braccini, E. Galleani d'Agliano +5
We present thermal conductivity measurements on very pure and dense bulk samples, as indicated by residual resistivity values as low as 0.5 mW cm and thermal conductivity values hi…
Two-band effects in transport properties of MgB2
M. Putti, V. Braccini, E. Galleani +5
We present resistivity and thermal conductivity measurements on bulk samples, prepared either by a standard method or by a one-step technique. The latter samples, due to their high…
Growth methods of c-axis oriented MgB2 thin films by pulsed laser deposition
V. Ferrando, S. Amoruso, E. Bellingeri +6
High quality MgB2 thin films have been obtained by pulsed laser deposition both on MgO and on Al2O3 substrates using different methods. In the standard two-step procedure, an amorp…
Increasing d-wave superconductivity by on site repulsion
E. Plekhanov, S. Sorella, M. Fabrizio
We study by Variational Monte Carlo an extended Hubbard model away from half filled band density which contains two competing nearest-neighbor interactions: a superexchange fav…
Vortex dynamics and pinning properties analysis of MgB2 bulk samples by ac susceptibility measurements
C. Senatore, M. Polichetti, D. Zola +3
The flux lines dynamics have been investigated on MgB2 bulk superconductors obtained by reactive liquid infiltration by measuring the ac magnetic susceptibility. The fundamental an…
W=0 Pairing in Carbon Nanotubes away from Half Filling
Enrico Perfetto, Gianluca Stefanucci, Michele Cini
We use the Hubbard Hamiltonian on the honeycomb lattice to represent the valence bands of carbon single-wall nanotubes. A detailed symmetry analysis shows that the mode…
Current profiles and AC losses of a superconducting strip with elliptic cross-section in perpendicular magnetic field
F. Gomory, R. Tebano, A. Sanchez +5
The case of a hard type II superconductor in the form of strip with elliptic cross-section when placed in transverse magnetic field is studied. We approach the problem in two steps…
Time Reversal Breaking Superconducting State in the Phase Diagram of the Cuprates
G. Sangiovanni, M. Capone, S. Caprara
We review and extend a previous study on the symmetry of the superconducting state, stimulated by recent tunneling and Andreev reflection measurements giving robust evidences for t…
Anelastic relaxation process of polaronic origin in La{2-x}Sr{x}CuO{4}: interaction between the charge stripes and pinning centers
F. Cordero, A. Paolone, R. Cantelli +1
The evolution of an anelastic relaxation process occurring around 80 K in La{2-x}Sr{x}CuO{4} at a measuring frequency of ~1 kHz has been followed from x = 0.0075 to the overdoped r…
Effects of an electronic topological transition for anisotropic low-dimensional superconductors
G. G. N. Angilella, E. Piegari, A. A. Varlamov
We study the superconducting properties of a two-dimensional superconductor in the proximity to an electronic topological transition (ETT). In contrast to the 3D case, we find that…
Optical emission investigation of laser-produced MgB2 plume expanding in an Ar buffer gas
S. Amoruso, R. Bruzzese, N. Spinelli +3
Optical emission spectroscopy is used to study the dynamics of the plasma generated by pulsed-laser irradiation of a MgB2 target, both in vacuum and at different Ar buffer gas pres…
Anelastic spectroscopy study of the spin-glass and cluster spin-glass phases of LaSrCuO
A. Paolone, F. Cordero, R. Cantelli +1
The anelastic spectra of LaSrCuO have been measured at liquid He temperatures slightly below and above the concentration which is considere…
Angular dependence of magnetoresistivity in c-oriented MgB2 thin film
C. Ferdeghini, V. Braccini, M. R. Cimberle +5
The anisotropy of MgB2 is still under debate: its value, strongly dependent on the sample and on the measuring method, ranges between 1.2 and 13. In this work we present our result…
Acoustic measurement of the low-energy excitations in Nd2-xCexCuO4
F. Cordero, C. R. Grandini, M. Ferretti
The complex dynamic Young's modulus of ceramic Nd2-xCexCuO4 with x = 0, 0.05 and 0.20 has been measured from 1.5 to 100 K at frequencies of 1-10 kHz. In the undoped sample the modu…
Effect of strain-induced electronic topological transitions on the superconducting properties of LaSrCuO thin films
G. G. N. Angilella, G. Balestrino, P. Cermelli +2
We propose a Ginzburg-Landau phenomenological model for the dependence of the critical temperature on microscopic strain in tetragonal high-Tc cuprates. Such a model is in agreemen…