Quantum size effects on the perpendicular upper critical field in ultrathin lead films.
نویسندگان
چکیده
We report the thickness-dependent (in terms of atomic layers) oscillation behavior of the perpendicular upper critical field Hc2perpendicular in the ultrathin lead films at the reduced temperature (t = T/Tc). Distinct oscillations of the normal-state resistivity as a function of film thickness have also been observed. Compared with the Tc oscillation, the Hc2perpendicular shows a considerable large oscillation amplitude and a pi phase shift. The oscillatory mean free path caused by the quantum size effect plays a role in Hc2perpendicular oscillation.
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ورودعنوان ژورنال:
- Physical review letters
دوره 95 24 شماره
صفحات -
تاریخ انتشار 2005