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Report No.

Observation of an extended magnetic field penetration in amorphous superconducting MoGe films

Nishio, Taichiro*; Okayasu, Satoru ; Suzuki, Junichi; Kokubo, Nobuhito*; Kadowaki, Kazuo*

We have observed the magnetic field distribution of a vortex generated in amorphous ($$alpha$$)-MoGe thin films with various thicknesses ($$d$$) ($$<$$$$lambda$$, where $$lambda$$ is the penetration depth) with a scanning SQUID microscope. From analyses of the field distribution as functions of the film thickness and temperature, it is found that an effective in-plane penetration depth ($$Lambda$$) extends with descreasing d, in accordance with the Pearl's prediction $$Lambda$$=2$$lambda$$$$^{2}$$/$$d$$. Temperature dependence of $$Lambda$$ is also consistent with the two-fluid model involving the Pearl's prediction.



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Category:Materials Science, Multidisciplinary



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