NbSe2, a true 2-D superconductor

ABSTRACT

Very few 2D superconductors exist in nature, and single-layer NbSe2 is the first among them that remains a superconductor in its isolated, 2D form without the need of a special substrate. Furthermore, CDW order - spatial modulation of both the electron density and the atomic lattice (see figure below) - has been revealed to be a genuine 2D electronic phenomenon in NbSe2. This work has been recently reported in Nature Physics.