| The mechanism of ultrafast structural switching in superionic copper (I) sulphide nanocrystals. | |
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MedLine Citation:
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PMID: 23340409 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Superionic materials are multi-component solids with simultaneous characteristics of both a solid and a liquid. Above a critical temperature associated with a structural phase transition, they exhibit liquid-like ionic conductivities and dynamic disorder within a rigid crystalline structure. Broad applications as electrochemical storage materials and resistive switching devices follow from this abrupt change in ionic mobility, but the microscopic pathways and speed limits associated with this switching process are largely unknown. Here we use ultrafast X-ray spectroscopy and scattering techniques to obtain an atomic-level, real-time view of the transition state in copper sulphide nanocrystals. We observe the transformation to occur on a twenty picosecond timescale and show that this is determined by the ionic hopping time. |
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Authors:
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T A Miller; J S Wittenberg; H Wen; S Connor; Y Cui; A M Lindenberg |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Nature communications Volume: 4 ISSN: 2041-1723 ISO Abbreviation: Nat Commun Publication Date: 2013 Jan |
Date Detail:
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Created Date: 2013-01-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101528555 Medline TA: Nat Commun Country: England |
Other Details:
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Languages: eng Pagination: 1369 Citation Subset: IM |
Affiliation:
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Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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