22 citations · 79 across the 8 of their papers we have counts for
8 papers
Kondo physics of magnetic adatoms on metallic surfaces when the onset of the surface conduction density of states crosses the Fermi level
J. Fernández, P. Roura-Bas
We study the role of the onset of Shockley states, , belonging to (111) surfaces of Cu, Ag and Au in the Kondo effect when a magnetic impurity is deposited on them. When …
Quantifying the leading role of the surface state in the Kondo effect of Co/Ag(111)
M. Moro-Lagares, J. Fernández, P. Roura-Bas +3
Using a combination of scanning tunneling spectroscopy and atomic lateral manipulation, we obtained a systematic variation of the Kondo temperature () of Co atoms on A…
Width of the charge-transfer peak in the SU(N) impurity Anderson model and its relevance to non-equilibrium transport
J. Fernández, F. Lisandrini, P. Roura-Bas +2
We calculate the width and intensity of the charge-transfer peak (the one lying at the on-site energy ) in the impurity spectral density of states as a functi…
Kondo temperature when the Fermi level is near a step in the conduction density of states
J. Fernández, A. A. Aligia, P. Roura-Bas +1
The (111) surface of Cu, Ag and Au is characterized by a band of surface Shockley states, with constant density of states beginning slightly below the Fermi energy. These states as…
Valence fluctuations in a lattice of magnetic molecules: application to iron(II) phtalocyanine molecules on Au(111)
J. Fernández, A. A. Aligia, Alejandro M. Lobos
We study theoretically a square lattice of the organometallic Kondo adsorbate iron(II) phtalocyanine (FePc) deposited on top of Au(111), motivated by recent scanning tunneling micr…
Numerical results for the Edwards-Anderson spin-glass model at low temperature
J. F. Fernández, J. J. Alonso
We have simulated Edwards-Anderson (EA) as well as Sherrington-Kirkpatrick systems of L^3 spins. After averaging over large sets of EA system samples of 3 =< L =< 10, we obtain acc…
Pair correlation function for spin glasses
J. F. Fernández, J. J. Alonso
We extract a pair correlation function (PCF) from probability distributions of the spin-overlap parameter q. The distributions come from Monte Carlo simulations. A measure, w, of t…
Equilibrium spin-glass transition of magnetic dipoles with random anisotropy axes
J. F. Fernández
We study fully occupied lattice systems of classical magnetic dipoles which point along random axes. Only dipolar interactions are considered. From tempered Monte Carlo simulations…