Competing effects of interactions and spin-orbit coupling in a quantum wire.
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.
Gritsev
V
V
Département de Physique, Université de Fribourg, CH-1700 Fribourg, Switzerland.
Japaridze
G
G
Pletyukhov
M
M
Baeriswyl
D
D