419 Citations
Quasi-particles and their absence in photoemission spectroscopy (American Physical Society 2002 Isakson Prize Paper written for Solid State Communications, the supporter of the prize)
- Physics
- 2002
The elucidation of Landau Fermi liquid quasi-particles and their absence in strongly correlated electron systems lies at the heart of modern research on the quantum mechanics of electrons in…
Threshold Switching and Self-Oscillation in Niobium Oxide
- Physics
- 2018
Volatile threshold switching, or current controlled negative differential resistance (CC-NDR), has been observed in a range of transition metal oxides. Threshold switching devices exhibit a large…
Non-Linear Canonical Methods in Strongly Correlated Electron Systems
- Physics
- 2014
In this thesis some new ideas to perform the analysis of Strongly Correlated Electronic Systems (SCES) are developed. In particular the use of non-linear canonical transformations is considered…
Variational description of the ground state of the repulsive two-dimensional Hubbard model in terms of nonorthogonal symmetry-projected Slater determinants
- Physics
- 2014
The few determinant (FED) methodology, introduced in our previous works for 1D lattices, is here adapted for the repulsive two-dimensional Hubbard model at half-filling and with finite doping…
Ju l 2 01 4 Properties of an almost localized Fermi liquid in applied magnetic field revisited : Statistically consistent Gutzwiller approach
- Physics
- 2012
We discuss the Hubbard model in an applied magnetic field and analyze the properties of neutral spin1 2 fermions within the so-called statistically consistent Gutzwiller approximation (SGA). The…
O líquido de spin isolante no modelo de Hubbard bidimensional levemente dopado
- Physics
- 2011
Our main goal here is to analyze the low-energy properties of the two-dimensional (2d) Hubbard model slightly away from half-filling from a renormalization group point of view within the two-loop…
Dynamics in the one-dimensional extended ionic Hubbard model
- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2011
The results for dynamical charge and spin structure factors indicate that only one of two bound/antibound state modes can be probed by electron-energy-loss spectroscopy and inelastic neutron scattering experiments.
Incommensurate charge correlation and phase diagram of the one-dimensional superlattice Hubbard model at half-filling
- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2010
In the gapless region, the correlation functions exhibit the asymptotic behavior of power-law decay as in the Tomonaga-Luttinger liquid.
Metal-Insulator Transitions at Surfaces
- Physics
- 2002
Various types of metal-insulator transitions are discussed to find conditions for which an ideal surface of a bulk insulator is metallic. It is argued that for the correlation-driven Mott…