Non-mean-field behavior and TC enhancement in granular microbridges

B. Dwir, G. Deutscher

Research output: Contribution to journalArticlepeer-review


New measurements of critical current Ic in granular Al microbridges are presented. They show, near the critical temperature Tc, a departure from the mean-field behavior (linear dependence of Ic 2/3 on T). Enhancement of Ic by microwaves is simultaneously observed, up to Tc. The results point out to a Tc enhancement (by ~ 10mK). A numerical model, which depicts the shape of the Ic 2/3(T) curve, is presented. The model also explains the co-existence of microwave enhancement, and can account for non-linear Ic2/3(T) curves measured by others.2, 3

Original languageEnglish
Pages (from-to)987-990
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number3
StatePublished - May 1983


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