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Magnetic moment as a function of applied field at for two NbN films: thick (upper) and thick (lower).
(Color online) Magneto-optical images of flux distribution in a thick NbN film at for increasing magnetic field. The image brightness represents the magnitude of the local flux density.
(Color online) First dendrites formed in a zero-field-cooled NbN film during increasing applied field . Dendrites formed at higher temperatures are characterized by a stronger branching.
Determination of fractal dimension of the first dendritic flux structure for different temperatures: 3.5, 3.8, 4.4, and from top to bottom. The curves are shifted vertically to avoid overlapping.
Fractal dimension and total area of the first dendritic flux structure as functions of temperature or applied field.
Parameters of NbN films.
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