Quantum phase transitions
- M. Lavagna
- Physics
- 7 February 2001
Abstract We give a general introduction to quantum phase transitions in strongly correlated electron systems. These transitions, which occur at zero temperature when a non-thermal parameter g such as…
The Kondo Lattice Model
- M. Lavagna, C. Pépin
- Physics
- 5 March 1999
In this lecture, we review the experimental situation of heavy Fermions with emphasis on the existence of a quantum phase transition (QPT) and related non-Fermi liquid (NFL) effects. We overview the…
Density of states and magnetic properties of the rare-earth compounds RFe2, RCO2 and RNi2
- M. Cyrot, M. Lavagna
- Physics
- 1 August 1979
The density of states of yttrium compounds YM2 (M = Fe, Co, Ni) is calculated within a tight-binding scheme. Using the Stoner model, conclusions are drawn about their magnetic and electronic…
THEORETICAL ANALYSIS OF THE QUANTUM PHOTOELECTRIC YIELD IN SCHOTTKY DIODES
- M. Lavagna, J. Pique, Y. Marfaing
- Physics
- 1 March 1977
Nonsymmetrized noise in a quantum dot: Interpretation in terms of energy transfer and coherent superposition of scattering paths
- R. Zamoum, M. Lavagna, A. Cr'epieux
- Physics
- 27 November 2015
We calculate the nonsymmetrized current noise in a quantum dot connected to two reservoirs by using the nonequilibrium Green function technique. We show that both the current autocorrelator (inside a…
Transport through an interacting quantum dot driven out-of-equilibrium
- M. Lavagna
- Physics
- 18 March 2015
We study a single-level quantum dot in the presence of strong Coulomb interaction under nonequilibrium condition. By extending the equation of motion method to nonequilibrium, we study the transport…
Volume collapse in the Kondo lattice
- M. Lavagna, C. Lacroix, M. Cyrot
- Physics
- 5 July 1982
Anderson model out of equilibrium: Decoherence effects in transport through a quantum dot
- Raphael Van Roermund, Shiue-yuan Shiau, M. Lavagna
- Physics
- 21 January 2010
The paper deals with the nonequilibrium two-lead Anderson model, considered as an adequate description for transport through a d-c biased quantum dot. Using a self-consistent equation-of-motion…
Non-symmetrized noise in a quantum dot: interpretation in terms of photon emission and coherent superposition of scattering paths
- R. Zamoum, M. Lavagna, A. Crépieux
- Physics
- 27 November 2015
Effects of order on the electronic structure of ferromagnetic transition metal alloys: application to FeCo and Ni3Fe
- M. Desjonquéres, M. Lavagna
- Materials Science
- 1 September 1979
The electronic structures of ordered and disordered transition metal alloys are described in a tight-binding scheme. Charge transfer and magnetism are treated within a self-consistent Hartree-Fock…
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