Noise correlations in quasi-1D conductors with different contact geometries*

We nanofabricated end contacts to mesowires of NbSe$_{3}$ and tested for the presence of correlations in noise spectroscopy at various temperatures below Peierls transition temperature. We find that for 1/$f$-like, broadband noise (BBN), the degree of correlations in transport in two segments along a NbSe$_{3}$ mesowire can be tuned with electric field and temperature. For standard, bottom/top contacts geometries, we see a limited degree of correlations for narrow band noise (NBN) (typically 20-30{\%}, except for a limited range of temperatures), but we also see that end contact geometry enhances the degree of correlations for NBN signal (closer to 50{\%}). We believe this phenomenon is related to a better control of the CDW transport, such as weaker temperature dependence of condensate current. We also explore the issues of the overall energy transfer through such contacts.