  We study delocalization transition in a one-dimensional electron system with
quenched disorder by using supersymmetric (SUSY) methods. Especially we focus
on effects of nonlocal correlation of disorder, for most of studies given so
far considered $\delta$-function type white noise disorder. We obtain wave
function of the "lowest-energy" state which dominates partition function in the
limit of large system size. Density of states is calculated in the scaling
region. The result shows that delocalization transition is stable against
nonlocal short-ranged correlation of disorder. Especially states near the band
center are enhanced by the correlation of disorder which partially suppresses
random fluctuation of disorder. Physical picture of the localization and the
delocalization transition is discussed.
