Superconducting network in spatially modulated magnetic field - Hofstadter-type problem in checkerboad field
S.Ito, M.Ando, S.Katsumoto, Y.Iye
J. Phys. Soc. Jpn 68 3158 (1999)
Modify
The superconducting transition of a two-dimensional square network of Nb in a spatially modulated magnetic field, consisting of a uniform component and a sign-alternating (checkerboard pattern) component, has been studied. Evolution of the Little-Parks oscillation pattern as a function of the checkerboard field amplitude manifests some features of the low-energy envelopes of the corresponding Hofstadter butterfly-type diagrams.