Magnetic Switching of Phase-Slip Dissipation in NbSe2 Nanobelts

TL;DR

This paper investigates how magnetic fields influence phase-slip dissipation in NbSe2 nanobelts, revealing periodic voltage steps related to vortex lattice dynamics and order parameter interference.

Contribution

It demonstrates magnetic control of phase-slip phenomena in NbSe2 nanobelts and discusses underlying mechanisms involving vortex lattice and order parameter interference.

Findings

Voltage steps are periodic with magnetic field below critical temperature.

Phase-slip structures nucleate during current-driven measurements.

Magnetic field modulates dissipation states via vortex dynamics.

Abstract

The stability of the superconducting dissipationless and resistive states in single-crystalline NbSe2 nanobelts 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 nanobelt.