One-dimensional Superconducting NbSe2

Niobium diselenide (NbSe$_{2})$ in bulk crystal form has been used in the past as a model system to explore vortex physics due to its extremely weak vortex pinning and the pronounced peak effect. The layered crystalline structure of NbSe$_{2}$ favors the formation of plate-like samples and resists the growth of one-dimensional NbSe$_{2}$ structures. Here we demonstrate a novel method of synthesizing 1D NbSe$_{2}$ structures including wires and ribbons. Our two-step approach includes the synthesis of 1D NbSe$_{3}$ nanostructures and their conversion into NbSe$_{2}$ through the reduction of selenium while maintaining their shape. The converted 1D NbSe$_{2}$ samples are superconducting with transition temperatures of about 7.0$\sim $7.2K, similar to that of bulk NbSe$_{2}$ crystals. The synthesis, structural characterization and physical properties measured with both transport and magnetization will be reported.