Publication Date:
2001-12-18
Description:
In doubly connected superconductors, such as hollow cylinders, the fluxoid is known to be quantized, allowing the superfluid velocity to be controlled by an applied magnetic flux and the sample size. The sample-size-induced increase in superfluid velocity has been predicted to lead to the destruction of superconductivity around half-integer flux quanta. We report transport measurements in ultrathin Al and Au0.7In0.3 cylinders verifying the presence of this destructive regime characterized by the loss of the global phase coherence and reveal a phase diagram featuring disconnected phase coherent regions, as opposed to the single region seen in larger superconducting cylinders studied previously.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Y -- Zadorozhny, Y -- Rosario, M M -- Rock, B Y -- Carrigan, P T -- Wang, H -- New York, N.Y. -- Science. 2001 Dec 14;294(5550):2332-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA. liu@phys.psu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743195" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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