ZeroBias Anomaly in Disordered Wires
Abstract
We calculate the lowenergy tunneling density of states ν(ɛ,T) of an Nchannel disordered wire, taking into account the electronelectron interaction nonperturbatively. The finite scattering rate 1/τ results in a crossover from the Luttinger liquid behavior at higher energies, ν~ɛ^{α}, to the exponential dependence ν(ɛ,T = 0)~exp(ɛ^{*}/ɛ) at low energies, where ɛ^{*}~1/(Nτ). At finite temperature T, the tunneling density of states depends on the energy through the dimensionless variable ɛ/(ɛ^{*}T). At the Fermi level ν(ɛ = 0,T)~exp((ɛ^{*}/T) ).
 Publication:

Physical Review Letters
 Pub Date:
 December 2001
 DOI:
 10.1103/PhysRevLett.87.246801
 arXiv:
 arXiv:condmat/0106448
 Bibcode:
 2001PhRvL..87x6801M
 Keywords:

 Mesoscopic Systems and Quantum Hall Effect
 EPrint:
 5 pages, 1 figure