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Title: Vortex ring and helical current formation in superconductors driven by a THz-field-induced toroidal vector potential
Author(s): Niedzielski, Björn
Berakdar, Jamal
Issue Date: 2022
Type: Article
Language: English
Abstract: Herein, the vortex dynamics in a type II superconducting torus driven by a curl-free vector potential corresponding to a toroidal moment is studied, which is triggered within picoseconds in an enclosed semiconductor by polarization-structured THz vector field pulses. Numerical simulations of the time-dependent Ginzburg–Landau equation in the presence of the toroidal vector potential evidence the formation of vortex ring structures that depend on the toroidal moment strength with a behavior resembling the Little–Parks effect. Applying in addition a static external magnetic flux density, the induced textures in the superconducting phase can be stabilized and steered to form stripe domains with corresponding helical supercurrent density.
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Sponsor/Funder: Publikationsfonds MLU
Journal Title: Physica status solidi / B
Publisher: Wiley-VCH
Publisher Place: Weinheim
Original Publication: 10.1002/pssb.202100622
Appears in Collections:Open Access Publikationen der MLU