Abstract
Tunneling into the correlated electron system in a quantum wire is considered. For the first time, the problem is solved for an arbitrary number of transverse electron modes in the wire. The tunnel density of states has power-law asymptotics at low energies, ν(ε)∝. A sample formula expressing α in terms of velocities of soundlike excitations (plasmons) propagating along the wire is obtained and the eigenvalue equation for these velocities is found. The general result for α allows one to extrapolate correctly between the known cases of a one-mode wire and a wide three-dimensional wire.
- Received 15 September 1992
DOI:https://doi.org/10.1103/PhysRevLett.70.990
©1993 American Physical Society