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19982013
most citedClustering and Non-Gaussian Behavior in Granular Matter

198 citations

Showing 2001Show all

6 papers · 1 filter

cond-mat.supr-con2001★ 61 cited

Small Fermi energy and phonon anharmonicity in MgB_2 and related compounds

Lilia Boeri, Giovanni B. Bachelet, Emmanuele Cappelluti +1

The remarkable anharmonicity of the E_{2g} phonon in MgB_2 has been suggested in literature to play a primary role in its superconducting pairing. We investigate, by means of LDA c…

cond-mat.stat-mech2001★ 6 cited

Stretched exponential relaxation in a diffusive lattice model

C. Fusco, P. Gallo, A. Petri +1

We studied the single dimer dynamics in a lattice diffusive model as a function of particle density in the high densification regime. The mean square displacement is found to be su…

cond-mat.str-el2001★ 34 cited

Glassy dynamics of the inhomogeneous metallic phase in La1-xCaxMnO3

F. Cordero, C. Castellano, R. Cantelli +1

The anelastic spectra (elastic energy loss and dynamic modulus versus temperature) of La1-xCaxMnO3 have been measured for 0.33< x < 0.5. A peak in the imaginary part of the elastic…

cond-mat.supr-con2001★ 20 cited

A search for incipient lattice instabilities in MgB by anelastic spectroscopy

F. Cordero, R. Cantelli, G. Giunchi +1

We measured the complex dynamic elastic modulus of MgB2 between 1.3 and 650 K at frequencies included between 5 and 70 kHz. The main purpose of this work is to search for possible…

cond-mat.supr-con2001★ 57 cited

High superconductivity in MgB by nonadiabatic pairing

E. Cappelluti, S. Ciuchi, C. Grimaldi +2

The evidence for the key role of the bands in the electronic properties of MgB points to the possibility of nonadiabatic effects in the superconductivity of these materials…

cond-mat.stat-mech2001★ 19 cited

Random sequential adsorption and diffusion of dimers and k-mers on a square lattice

C. Fusco, P. Gallo, A. Petri +1

We have performed extensive simulations of random sequential adsorption and diffusion of -mers, up to in two dimensions with particular attention to the case . We foc…