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

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

2004-09-25

arxiv.org/abs/cond-mat/0409678v2

Phys. Rev. Lett. 94, 137207 (2005).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.94.137207

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 prevails. We also discuss the consequences for the operation of the Datta-Das transistor.

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