Tunneling into a Luttinger liquid revisited

Abstract

We study how electron-electron interactions renormalize tunneling into a Luttinger liquid beyond the lowest order of perturbation in the tunneling amplitude. We find that the conventional fixed point has a finite basin of attraction only in the point contact model, but a finite size of the contact makes it generically unstable to the tunneling-induced break up of the liquid into two independent parts. In the course of renormalization to the nonperturbative-in-tunneling fixed point, the tunneling conductance may show a nonmonotonic behavior with temperature or bias voltage.

4+ pages, 6 figures; references added, published version

References in corpus (2)

• Probing spin-charge separation in a Tomonaga-Luttinger liquid
• Conductance through a potential barrier embedded in a Luttinger liquid: nonuniversal scaling at strong coupling

Cited by in corpus (1)

• Constraints on conductances for Y-junction of quantum wires