a vortex-antivortex pair; (d) final status: after the original vortex has been eliminated by the antivortex, a vortex core pointing upwards remains. Disclaimer: AAAS and EurekAlert! are not ...

where vortex-antivortex pairs drive superfluidity without conventional symmetry breaking, with interaction plays a crucial role. Since then, this phenomenon had primarily been studied in various ...

For an infinitely large two-dimensional superconducting system at low temperature, vortex-antivortex pairs with opposite vorticity are bound together and the system is in a stable superconducting ...