Tuning the Spin Hall Effect in a Two-Dimensional Electron Gas (2009)
We provide a theoretical framework for the electric field control of the electron spin in systems with diffusive electron motion. The approach is valid in the experimentally important case where both...
Gorini, C., Schwab, P., Dzierzawa, M., Raimondi, R.
We consider a two-dimensional electron gas in the presence of Rashba spin-orbit coupling, and study the effects of magnetic s-wave impurities and long-range non-magnetic disorder on the spin-charge...
Spin Hall effect in a two-dimensional electron gas in the presence of a magnetic field (2008)
Lucignano, P., Raimondi, R., Tagliacozzo, A.
We study the spin Hall effect of a two-dimensional electron gas in the presence of a magnetic field and both the Rashba and Dresselhaus spin-orbit interactions. We show that the value of the spin...
Gutzwiller scheme for electrons and phonons: the half-filled Hubbard-Holstein model (2008)
Barone, P., Raimondi, R., Capone, M., Castellani, C., Fabrizio, M.
We analyze the ground-state properties of strongly-correlated electrons coupled with phonons by means of a generalized Gutzwiller wavefunction which includes phononic degrees of freedom. We study in...
Magneto-spin Hall conductivity of a two-dimensional electron gas (2008)
Milletari', M., Raimondi, R., Schwab, P.
It is shown that the interplay of long-range disorder and in-plane magnetic field gives rise to an out-of-plane spin polarization and a finite spin Hall conductivity of the two-dimensional electron...
P. Schwab, R. Raimondi, C. Castellani
. We consider the thermodynamic behavior of a disordered interacting electron system in two dimensions. We show that the corrections to the thermodynamic potential in the weakly localized regime give...
Current-induced spin polarization and the spin Hall effect: a quasiclassical approach (2007)
Raimondi, R., Gorini, C., Dzierzawa, M., Schwab, P.
The quasiclassical Green function formalism is used to describe charge and spin dynamics in the presence of spin-orbit coupling. We review the results obtained for the spin Hall effect on restricted...
Extended Gutzwiller wavefunction for the Hubbard-Holstein model (2006)
Barone, P., Raimondi, R., Capone, M., Castellani, C., Fabrizio, M.
We introduce a new type of Gutzwiller variational wavefunction for correlated electrons coupled to phonons, able to treat on equal footing electronic and lattice degrees of freedom. We benchmark the...
Barone, P., Raimondi, R., Capone, M., Castellani, C.
We study the Hubbard-Holstein model using slave-boson mean-field and a variation al Lang-Firsov transformation. We identify weak and strong e-ph coupling solutions, whose stability depends both on...
R Raimondi, M Soli, T Lamparelli, A Bacigalupo, W Arcese, M Belloni, ...
Di Castro, C., Raimondi, R., Caprara, S.
By reviewing the application of the renormalization group to different theoretical problems, we emphasize the role played by the general symmetry properties in identifying the relevant running...
Quasiclassical theory of charge transport in disordered interacting electron systems (2003)
We consider the corrections to the Boltzmann theory of electrical transport arising from the Coulomb interaction in disordered conductors. In this article the theory is formulated in terms of...
Coherent transport in disordered metals: zero dimensional limit (2002)
We consider non-equilibrium transport in disordered conductors. We calculate the interaction correction to the current for a short wire connected to electron reservoirs by resistive interfaces. In...
Savona, G., Livanov, D. V., Raimondi, R., Varlamov, A. A.
This paper has been withdrawn by the author(s),
Electrostatic analogy for integrable pairing force Hamiltonians (2002)
Amico, L., Di Lorenzo, A., Mastellone, A., Osterloh, A., Raimondi, R.
For the exactly solved reduced BCS model an electrostatic analogy exists; in particular it served to obtain the exact thermodynamic limit of the model from the Richardson Bethe ansatz equations. We...
Magnetoconductance of a two-dimensional metal in the presence of spin-orbit coupling (2001)
We show that in the metallic phase of a two dimensional electron gas the spin-orbit coupling due to structure inversion asymmetry leads to a characteristic anisotropy in the magnetoconductance....
Coherent transport in disordered metals out of equilibrium (2001)
We derive a formula for the quantum corrections to the electrical current for a metal out of equilibrium. In the limit of linear current-voltage characteristics our formula reproduces the well known...
Spin-orbit induced anisotropy in the magnetoconductance of two-dimensional metals (2001)
Raimondi, R., Leadbeater, M., Schwab, P., Caroti, E., Castellani, C.
It is shown that the spin-orbit coupling due to structure inversion asymmetry leads to a characteristic anisotropy in the magnetoconductance of two-dimensional metals. Relevance for recent...
Rohatiner, A. Z. S., Bassan, R., Raimondi, R., Amess, J. A. L., Arnott, S., Personen, A., ...
Background Debate and controversy remain as to the optimal post-remission therapy for younger patients with acute myelogenous leukaemia (AML). The aim of this study was to evaluate high-dose...
Non-linear conductivity and quantum interference in disordered metals (1999)
Leadbeater, M., Raimondi, R., Schwab, P., Castellani, C.
We report on a novel non-linear electric field effect in the conductivity of disordered conductors. We find that an electric field gives rise to dephasing in the particle-hole channel, which...
Non-linear effects and dephasing in disordered electron systems (1999)
Raimondi, R., Schwab, P., Castellani, C.
The calculation of the dephasing time in electron systems is presented. By means of the Keldysh formalism we discuss in a unifying way both weak localization and interaction effects in disordered...
Non-Linear Effects and Dephasing in Disordered Electron Systems (1999)
R. Raimondi, P. Schwab, C. Castellani
The calculation of the dephasing time in electron systems is presented. By means of the Keldysh formalism we discuss in a unifying way both weak localization and interaction effects in disordered...
Andreev Tunneling in Strongly Interacting Quantum Dots (1998)
We review recent work on resonant Andreev tunneling through a strongly interacting quantum dot connected to a normal and to a superconducting lead. We derive a general expression for the current...
Properties of superconductor - Luttinger liquid hybrid systems (1998)
Fazio, Rosario, Hekking, F. W. J., Odintsov, A. A., Raimondi, R.
In this paper we review some recent results concerning the physics of superconductor - Luttinger liquid proximity systems. We discuss both equilibrium (the pair amplitude, Josephson current, and the...
Sub-gap conductance in ferromagnetic-superconducting mesoscopic structures (1998)
Leadbeater, M., Lambert, C. J., Raimondi, R., Volkov, A. F.
We study the sub-gap conductance of a ferromagnetic mesoscopic region attached to a ferromagnetic and a superconducting electrode by means of tunnel junctions. In the absence of the exchange field,...
Andreev tunnelling in quantum dots: A slave-boson approach (1998)
We study a strongly interacting quantum dot connected to a normal and to a superconducting lead. By means of the slave-boson technique we investigate the low temperature regime and discuss electrical...
Phase coherent transport in hybrid superconducting nanostructures (1997)
This article is an overview of recent experimental and theoretical work on transport in phase-coherent hybrid nanostructures, with particular emphasis on dc electrical conduction. A summary of...
Boundary conditions for quasiclassical equations in the theory of superconductivity (1996)
Lambert, C. J., Raimondi, R., Sweeney, V., Volkov, A. F.
In this paper we derive effective boundary conditions connecting the quasiclassical Green's function through tunnel barriers in superconducting - normal hybrid (S-N or S-S') structures in the dirty...
Cook, P. M. A., Raimondi, R., Lambert, C. J.
We examine the effect of d-wave symmetry on zero bias anomalies in normal-superconducting tunnel junctions and phase-periodic conductances in Andreev interferometers. In the presence of d-wave...
Diffusive and ballistic motion in superconducting hybrid structures (1995)
Claughton, N. R., Raimondi, R., Lambert, C. J.
We examine transport properties of superconducting hybrid mesoscopic structures, in both the diffusive and ballistic regimes. For diffusive structures, analytic results from quasi-classical theory...
Giant Conductance Oscillations In Mesoscopic Andreev Interferometers (1995)
Allsopp, N. K., Canizares, J. Sanchez, Raimondi, R., Lambert, C. J.
We analyze the electrical conductance $G(\phi)$ of a two-dimensional, phase coherent structure in contact with two superconductors, which is known to be an oscillatory function of the phase...