Schematic presentation of the spacing-graded array configuration.
Magnetoresistance curves MR of a niobium film with spacing-graded array of holes in two opposite direction of dc current: (a) and (b) .
dc voltage drop as a function of ac current for different magnetic fields. Panels (a)–(b): . Panel (c): . Panel (d)–(f): . is the first matching field and is equal to .
(a) The dependence of the maximum∕minimum rectified voltage in the curves of the peak∕dip for different applied magnetic field. (b) The position of peak (open symbols) and dip (filled symbols) as a function of applied magnetic field.
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