Publication Date:
2006-04-22
Description:
The d-wave pairing symmetry in high-critical temperature superconductors makes it possible to realize superconducting rings with built-in pi phase shifts. Such rings have a twofold degenerate ground state that is characterized by the spontaneous generation of fractional magnetic flux quanta with either up or down polarity. We have incorporated pi phase-biased superconducting rings in a logic circuit, a flip-flop, in which the fractional flux polarity is controllably toggled by applying single flux quantum pulses at the input channel. The integration of p rings into conventional rapid single flux quantum logic as natural two-state devices should alleviate the need for bias current lines, improve device symmetry, and enhance the operation margins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ortlepp, T -- Ariando -- Mielke, O -- Verwijs, C J M -- Foo, K F K -- Rogalla, H -- Uhlmann, F H -- Hilgenkamp, H -- New York, N.Y. -- Science. 2006 Jun 9;312(5779):1495-7. Epub 2006 Apr 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Information Technology, Rapid Single-Flux Quantum (RSFQ) Design Group, University of Technology Ilmenau, Post Office Box 100565, D-98684 Ilmenau, Germany. thomas.ortlepp@tu-ilmenau.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16627699" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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