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arXiv 1106.3852cond-mat.supr-concond-mat.mes-hall
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钛纳米线中量子相位滑移效应的证据

Evidence of quantum phase slip effect in titanium nanowires

Janne Lehtinen, Timo Sajavaara, Konstantin Arutyunov, Alexander Vasiliev

摘要:

实验研究了钛纳米线的电子输运特性。在有效直径$\lesssim$ 50 nm以下,所有样品均表现出$R(T)$依赖性的显著加宽,这不能解释热波动。广泛的显微镜和元素分析表明,不存在能够将$R(T)$转变扩大到这种程度的结构或/和几何缺陷。我们将这种效应与序参量的量子涨落联系起来。

英文摘要:

Electron transport properties of titanium nanowires were experimentally studied. Below the effective diameter $\lesssim$ 50 nm all samples demonstrated a pronounced broadening of the $R(T)$ dependencies, which cannot be accounted for thermal flcutuations. An extensive microscopic and elemental analysis indicates the absence of structural or/and geometrical imperfection capable to broaden the the $R(T)$ transition to such an extent. We associate the effect with quantum flucutuations of the order parameter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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