The authors claim to observe (hc/2e)/m periodic magnetoresistance oscillations in an aluminum ring for m up to 20 and attribute them to multiple Andreev reflection, but the evidence rests on Fourier harmonics and qualitative fits.
The values of f0 found from the period of the Little-Parks type oscillations (the inset of Fig
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Quantum magnetoresistive (hc/2e)/m periodic oscillations in a superconducting ring
The authors claim to observe (hc/2e)/m periodic magnetoresistance oscillations in an aluminum ring for m up to 20 and attribute them to multiple Andreev reflection, but the evidence rests on Fourier harmonics and qualitative fits.