Browsing University of MissouriColumbia by Author "D'Amico, Irene"
Now showing items 110 of 10

Continuum elasticity theory of edge waves in a twodimensional electron liquid with finiterange interactions
D'Amico, Irene; Vignale, Giovanni, 1957 (American Physical Society, 199907)We make use of continuum elasticity theory to investigate the collective modes that propagate along the edge of a two dimensional electron liquid or crystal in a magnetic field. An exact solution of the equations of motion ... 
Coulomb interaction effects in spinpolarized transport
D'Amico, Irene; Vignale, Giovanni, 1957 (American Physical Society, 200202)We study the effect of the electronelectron interaction on the transport of spin polarized currents in metals and doped semiconductors in the diffusive regime. In addition to wellknown screening effects, we identify two ... 
Dissipation through spin Coulomb drag in electronic spin dynamics
D'Amico, Irene; Ullrich, Carsten A. (arXiv, 200509)Spin Coulomb drag (SCD) constitutes an intrinsic source of dissipation for spin currents in metals and semiconductors. We discuss the power loss due to SCD in potential spintronics devices and analyze in detail the associated ... 
Dissipation through spin Coulomb drag in electronic spin transport and optical excitations
D'Amico, Irene; Ullrich, Carsten A. (American Physical Society, 200609)Spin Coulomb drag (SCD) constitutes an intrinsic source of dissipation for spin currents in metals and semiconductors. We discuss the power loss due to SCD in potential spintronics devices and analyze in detail the associated ... 
Exact exchangecorrelation potential for a timedependent twoelectron system
D'Amico, Irene; Vignale, Giovanni, 1957 (American Physical Society, 199903)We obtain a solution of the timedependent Schrödinger equation for a twoelectron system confined to a plane by an isotropic parabolic potential whose curvature is periodically modulated in time. From this solution we ... 
High field and Coulomb interaction effects on spin injection in degenerate semiconductors
D'Amico, Irene; Vignale, Giovanni, 1957 (Institute of Physics, 200403)We analyse the combined effect of high electric field and Coulomb interaction on spin transport in semiconductors. We concentrate on the experimentally relevant regime characterized by T lap TF (intermediate to degenerate), ... 
Intersubband spinorbit coupling and spin splitting in symmetric quantum wells
Kyrychenko, F. V.; Ullrich, Carsten A.; D'Amico, Irene (arXiv, 200710)In semiconductors with inversion asymmetry, spinorbit coupling gives rise to the wellknown Dresselhaus and Rashba effects. If one considers quantum wells with two or more conduction subbands, an additional, intersubbandinduced ... 
Spin Coulomb drag in the twodimensional electron liquid
D'Amico, Irene; Vignale, Giovanni, 1957 (American Physical Society, 200307)We calculate the spindrag transresistivity r "#(T) in a twodimensional electron gas at temperature T in the randomphase approximation. In the lowtemperature regime we show that, at variance with the threedimensional ... 
Spin diffusion in doped semiconductors: The role of Coulomb interactions
D'Amico, Irene; Vignale, Giovanni, 1957 (EDP Sciences, 200106)We examine the effect of Coulomb interaction on the mobility and diffusion of spin packets in doped semiconductors. We find that the diffusion constant is reduced, relative to its noninteracting value, by the combined ... 
Theory of spin Coulomb drag in spinpolarized transport
D'Amico, Irene; Vignale, Giovanni, 1957 (American Physical Society, 200008)We introduce a distinctive feature of spinpolarized transport, the spin Coulomb drag: there is an intrinsic source of friction for spin currents due to the Coulomb interaction between spin “up” and spin “down” electrons. ...