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23 April 2024

» arxiv » cond-mat/0507172

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Quantum size effects on the perpendicular upper critical field in ultra-thin lead films
Xin-Yu Bao ; Yan-Feng Zhang ; Yupeng Wang ; Jin-Feng Jia ; Qi-Kun Xue ; X. C. Xie ; Zhong-Xian Zhao ;
Date:	7 Jul 2005
Abstract:	We report the thickness-dependent (in terms of atomic layers) oscillation behavior of the perpendicular upper critical field $H_{c2perp}$ in the ultra-thin lead films at the reduced temperature ($t=T/T_c$). Distinct oscillations of the normal-state resistivity as a function of film thickness have also been observed. Compared with the $T_c$ oscillation, the $H_{c2perp}$ shows a considerable large oscillation amplitude and a $pi$ phase shift. The oscillatory mean free path caused by quantum size effect plays a role in $H_{c2perp}$ oscillation.
Source:	arXiv, cond-mat/0507172
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