Possible interface superconductivity with coherent quantum CDW transport and soliton condensation phase transition in heterogeneously doped ion implanted NbSe$_{3}$ single crystals*

Aharonov-Bohm quantum interference shows oscillations of period $h$/2$e$ in conductance \textit{vs}. magnetic flux of CDW rings above 77 K, reveals macroscopically observable quantum behavior. CDW transports electrons through a linear chain compound all together as the Peierls gaps displace in momentum space along with the entire Fermi Sea, similar to a superconductor. The dV/dI vs. bias at several temps showing a significant drop in zero-bias resistance below 46 K across an ion-implanted boundary suggests possible interfacial superconductivity or a related phase transition near the boundary between ion-implanted and un-implanted regions of a CDW in NbSe$_{3}$. The data suggests condensation of solitons near the interface. Charge soliton ($\pm$ 2$e$) dislocations could accumulate and condense near the boundary either due to injected charge from non-isoelectronic impurities or due to a sharp gradient in optimum CDW phase between the weakly and strongly pinned regions. Implanted NbSe$_{3}$ also been studied with TEM.