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    Université de Fribourg

    Tunneling conductance of a mesoscopic ring with spin-orbit coupling and Tomonaga-Luttinger interaction

    Pletyukhov, M. ; Gritsev, Vladimir ; Pauget, N.

    In: Physical Review B, 2006, vol. 74, p. 045301

    We study the tunneling current through a mesoscopic two-terminal ring with spin-orbit coupling, which is threaded by a magnetic flux. The electron-electron interaction in the ring is described in terms of a Tomonaga-Luttinger model which also allows us to account for a capacitive coupling between the ring and the gate electrode. In the regime of weak tunneling, we describe how, at temperatures...

    Université de Fribourg

    Screening in the two-dimensional electron gas with spin-orbit coupling

    Pletyukhov, M. ; Gritsev, Vladimir

    In: Physical Review B, 2006, vol. 74, no. 4, p. 045307

    We study screening properties of the two-dimensional electron gas with Rashba spin-orbit coupling. Calculating the dielectric function within the random phase approximation, we describe the new features of screening induced by spin-orbit coupling, which are the extension of the region of particle-hole excitations and the spin-orbit-induced suppression of collective modes. The required...

    Université de Fribourg

    Competing effects of interactions and spin-orbit coupling in a quantum wire

    Gritsev, Vladimir ; Japaridze, G. ; Pletyukhov, M. ; Baeriswyl, Dionys

    In: Physical Review Letters, 2005, vol. 94, p. 137207

    We study the interplay of electron-electron interactions and Rashba spin-orbit coupling in one-dimensional ballistic wires. Using the renormalization group approach we construct the phase diagram in terms of Rashba coupling, Tomonaga-Luttinger stiffness and backward scattering strength. We identify the parameter regimes with a dynamically generated spin gap and show where the Luttinger liquid...