Tunneling through Barrier in Coulomb Gas Confined in Quantum Wire

Abstract

The tunneling through a potential barrier in a Coulomb gas confined in a quantum wire is discussed. The tunneling conductance g(T) at temperature T is found to be [g(T)∝exp, \left[ln, \frac{v_F}{WT}-\frac{2}{3r}, \left {\left(1+r, ln, \frac{v_F}{WT}\ ight)^3/2-1\ ight}\ ight], \ ]where W is the width of the wire, v_F is the Fermi velocity, and r=(8/π ²)r_s=4e²/π v_Fε ₀ is the dimensionless mean separation between electrons.