Vortex lattice in presence of a tunable periodic pinning potential
W.V. Pogosov, A.L. Rakhmanov, and V.V. Moshchalkov
TL;DR
This paper investigates how a tunable periodic pinning potential influences vortex lattice configurations, phase transitions, and critical current in superconductors using a phenomenological London model.
Contribution
It introduces a phenomenological approach to analyze vortex lattice behavior with tunable artificial pinning sites, focusing on phase transitions and critical current variations.
Findings
Identification of pinned and deformed triangular lattice phases
Analysis of phase transitions as a function of pinning strength
Evaluation of critical current in different vortex lattice phases
Abstract
The vortex patterns stabilized by the square array of artificial pinning sites with a tunable pinning strength are studied by using a phenomenological approach in the London limit. The transitions between pinned and deformed triangular lattices are analyzed as a function of the amplitude of the vortex-pinning site interaction and the characteristic length-scale of this interaction. The critical current and different phases of vortex lattice are studied in presence of external transport current.
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