Foucault imaging of superconducting fluxons

T. Yoshida, J. Endo, K. Harada, T. Matsuda, O. Kamimura, A. Tonomura, Marco Beleggia, R. Patti, G. Pozzi

Research output: Contribution to journalJournal articleResearchpeer-review


The Foucault method, one of the classical Lorentz microscopy techniques, is here investigated in order to demonstrate its applicability to in-focus observations of superconducting fluxons. As the deflections involved are of the order of 10(-5)-10(-6) rad, low-angle techniques, high brightness, coherent illumination, and a low aberration magnetic stage are needed. The first experimental results are presented and discussed in relation with a theoretical model for the fluxon which allows the interpretation of the main features of the observed patterns. (C) 1999 American Institute of Physics. [S0021-8979(99)03708-1].
Original languageEnglish
JournalJournal of Applied Physics
Issue number8
Pages (from-to)4096-4103
Number of pages6
Publication statusPublished - 1999
Externally publishedYes


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