  The interplay of non-Hermiticity and disorder dramatically influences
system's localization properties, giving rise to intriguing quantum phenomena.
Although the intrinsic non-Hermitian skin effect (NHSE) is robust against the
weak disorder even in a one-dimensional system, it becomes Anderson
localization under strong disorder. Here, we study a
localization-delocalization transition by coupling a strongly disordered
Hatano-Nelson (HN) chain to a disordered Hermitian chain with its disorder
correlated to that of HN chain. Regardless of the disorder strength, as the
coupling strength between HN and Hermitian chain increases, a delocalization
transition occurs. This leads to a reentrant NHSE due to the interplay of
non-Hermiticity and correlated disorder. We reveal the underlying mechanism for
the reentrant NHSE under correlated disorder. Moreover, the
localization-delocalization transition is well captured by the real-space
winding number.
