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DOI	10.1126/science.aaz2463
	Strongly correlated superfluid order parameters from dc Josephson supercurrents
	Kwon W.J.; Del Pace G.; Panza R.; Inguscio M.; Zwerger W.; Zaccanti M.; Scazza F.; Roati G.
发表日期	2020
ISSN	10959203
起始页码	84
结束页码	88
卷号	369 期号:6499
英文摘要	The direct-current (dc) Josephson effect provides a phase-sensitive tool for investigating superfluid order parameters. We report on the observation of dc Josephson supercurrents in strongly interacting fermionic superfluids across a tunneling barrier in the absence of any applied potential difference. For sufficiently strong barriers, we observed a sinusoidal current-phase relation, in agreement with Josephson's seminal prediction. We mapped out the zero-resistance state and its breakdown as a function of junction parameters, extracting the Josephson critical current behavior. By comparing our results with an analytic model, we determined the pair condensate fraction throughout the Bardeen-Cooper-Schrieffer-Bose-Einstein condensation crossover. Our work suggests that coherent Josephson transport may be used to pin down superfluid order parameters in diverse atomic systems, even in the presence of strong correlations. Copyright © 2020, American Association for the Advancement of Science.
关键词	article direct current male potential difference prediction
语种	英语
来源机构	Science (New York, N.Y.)
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133375
推荐引用方式 GB/T 7714	Kwon W.J.,Del Pace G.,Panza R.,et al. Strongly correlated superfluid order parameters from dc Josephson supercurrents[J]. Science (New York, N.Y.),2020,369(6499).
APA	Kwon W.J..,Del Pace G..,Panza R..,Inguscio M..,Zwerger W..,...&Roati G..(2020).Strongly correlated superfluid order parameters from dc Josephson supercurrents.,369(6499).
MLA	Kwon W.J.,et al."Strongly correlated superfluid order parameters from dc Josephson supercurrents".369.6499(2020).