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19 April 2024

» pubmed » pmid16384412

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Quantum size effects on the perpendicular upper critical field in ultrathin lead films
Xin-Yu Bao ; Yan-Feng Zhang ; Yupeng Wang ; Jin-Feng Jia ; Qi-Kun Xue ; X C Xie ; Zhong-Xian Zhao ;
Date:	9 Dec 2005
Journal:	Phys Rev Lett, 95 (24), 247005
Abstract:	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.
Source:	PubMed, pmid16384412
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