  Localization properties of quasi-one dimensional quantum wire nanostructures
are investigated using the transfer matrix-Lyapunov exponent technique. We
calculate the localization length as a function of the effective mean-field
mobility assuming the random disorder potential to be arising from
dopant-induced short-range $\delta$-function or finite-range Gaussian impurity
scattering. The localization length increases approximately linearly with the
effective mobility, and is also enhanced by finite-range disorder. There is a
sharp reduction in the localization length when the chemical potential crosses
into the second subband.
