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
10 papers · 2 filters
Critical Field of MGB2 : Crossover from Clean to Dirty Regimes
M. Putti, V. Braccini, C. Ferdeghini +5
We have studied the upper critical field, Bc2, in poly-crystalline MgB2 samples in which disorder was varied in a controlled way to carry selectively p and s bands from clean to di…
Repulsion-Sustained Supercurrent and Flux Quantization in Rings of Symmetric Hubbard Clusters
Agnese Callegari, Michele Cini, Enrico Perfetto +1
We test the response to a threading magnetic field of rings of 5-site -symmetric repulsive Hubbard clusters connected by weak intercell links; each 5-site unit has the topo…
Point-Contact Spectroscopy in MgB_2: from Fundamental Physics to Thin-Film Characterization
R. S. Gonnelli, D. Daghero, A. Calzolari +9
In this paper we highlight the advantages of using point-contact spectroscopy (PCS) in multigap superconductors like MgB_2, both as a fundamental research tool and as a non-destruc…
Pressure-induced electronic topological transitions in low dimensional superconductors
G. G. N. Angilella
In the high-Tc cuprates, the unusual dependence of Tc on external pressure results from the combination of the nonmonotonic dependence of Tc on hole doping or hole-doping distribut…
Effect of two bands on critical fields in MgB2 thin films with various resistivity values
V. Ferrando, P. Manfrinetti, D. Marre' +4
Upper critical fields of four MgB2 thin films were measured up to 28 Tesla at Grenoble High Magnetic Field Laboratory. The films were grown by Pulsed Laser Deposition and showed cr…
Thermal properties of MgB2: the effect of disorder on gap amplitudes and relaxation times of p and s bands
M. Putti, E. Galleani, I. Pallecchi +4
We present thermal conductivity and specific heat measurements on MgB2 and Mg-AlB2 samples. Thermal properties have been analysed by using a two-gap model in order to estimate the…
Upper critical fields of MgB2 thin films
V. Ferrando, C. Bernini, P. Manfrinetti +4
Critical fields of four MgB2 thin films with a normal state resistivity ranging from 5 to 50 mWcm and Tc from 29.5 to 38.8 K were measured up to 28 T. Hc2(T) curves present a linea…
Effects of proximity to an electronic topological transition on normal state transport properties of the high-Tc superconductors
G. G. N. Angilella, R. Pucci, A. A. Varlamov +1
Within the time dependent Ginzburg-Landau theory, the effects of the superconducting fluctuations on the transport properties above the critical temperature are characterized by a…
Formation and mobility of oxygen vacancies in RuSr2GdCu2O8
F. Cordero, M. Ferretti, M. R. Cimberle +1
Oxygen vacancies are introduced in the RuO2 and possibly CuO2 planes of RuSr2GdCu2O8 by annealing in vacuum above 600 K. The diffusive jumps of the O vacancies are accompanied by a…
The low-energy phase-only action in a superconductor: a comparison with the XY model
L. Benfatto, A. Toschi, S. Caprara
The derivation of the effective theory for the phase degrees of freedom in a superconductor is still, to some extent, an open issue. It is commonly assumed that the classical XY mo…