Observation of Vortex Matching Phenomena in Antidot Array of NbN Thin Film
Ajay D. Thakur, Shuuichi Ooi, Subbaiah P. Chockalingam, John, Jesudasan, Pratap Raychaudhuri, Kazuto Hirata
TL;DR
This paper reports the observation of vortex matching phenomena in a NbN thin film with a rectangular antidot array, revealing complex vortex behaviors and transitions under magnetic fields.
Contribution
It presents experimental evidence of vortex matching in NbN antidot arrays and discusses multiple theoretical models explaining the phenomena.
Findings
Vortex matching phenomena observed in NbN antidot arrays.
Period doubling transition at higher magnetic fields.
Discussion of models including multi-vortex and lattice matching.
Abstract
We report vortex matching phenomenon in rectangular antidot array fabricated on epitaxial NbN thin film. The antidot array was fabricated using Focussed Ion Beam milling technique. The magneto-transport measurements points to a period doubling transition at higher magnetic field for rectangular lattices. The results are discussed within the light of several models including the multi-vortex model, the matched lattice model and the super-matched lattice model.
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