Related Experiment Video
Updated: Jul 19, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Magnetic-field enhancement of superconductivity in ultranarrow wires
A Rogachev1, T-C Wei, D Pekker
1Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801-3080, USA.
Abstract:
We study the effect of an applied magnetic field on sub-10-nm wide MoGe and Nb superconducting wires. We find that magnetic fields can enhance the critical supercurrent at low temperatures, and do so more strongly for narrower wires. We conjecture that magnetic moments are present, but their pair-breaking effect, active at lower magnetic fields, is suppressed by higher fields. The corresponding microscopic theory, which we have developed, quantitatively explains all experimental observations, and suggests that magnetic moments have formed on the wire surfaces.
Related Concept Videos
Magnetic Field Due To A Thin Straight Wire
Magnetic Field Due to Two Straight Wires
Superconductor
Types Of Superconductors
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Magnetic Force On Current-Carrying Wires: Example

