Magnetic switching of phase-slip dissipation in NbSe 2 nanoribbons

Abstract

The stability of the superconducting dissipationless and resistive states in single-crystalline NbSe2 nanoribbons is characterized by transport measurements in an external magnetic field (H). Current-driven electrical measurements show voltage steps, indicating the nucleation of phase-slip structures. Well below the critical temperature, the position of the voltage steps exhibits a sharp, periodic dependence as a function of H. This phenomenon is discussed in the context of two possible mechanisms: the interference of the order parameter and the periodic rearrangement of the vortex lattice within the nanoribbon.