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dc.contributor.authorTorchinsky, Darius H.
dc.contributor.authorMahmood, Fahad
dc.contributor.authorBollinger, Anthony T.
dc.contributor.authorBozovic, Ivan
dc.contributor.authorGedik, Nuh
dc.date.accessioned2014-07-18T15:08:02Z
dc.date.available2014-07-18T15:08:02Z
dc.date.issued2013-02
dc.date.submitted2012-10
dc.identifier.issn1476-1122
dc.identifier.issn1476-4660
dc.identifier.urihttp://hdl.handle.net/1721.1/88443
dc.description.abstractCuprate materials hosting high-temperature superconductivity (HTS) also exhibit various forms of charge and spin ordering1, 2, 3, 4, 5, 6 whose significance is not fully understood7. So far, static charge-density waves8 (CDWs) have been detected by diffraction probes only at particular doping levels9, 10, 11 or in an applied external field12 . However, dynamic CDWs may also be present more broadly and their detection, characterization and relationship with HTS remain open problems. Here we present a method based on ultrafast spectroscopy to detect the presence and measure the lifetimes of CDW fluctuations in cuprates. In an underdoped La[subscript 1.9]Sr[subscript 0.1]CuO4 film (T[subscript c] = 26 K), we observe collective excitations of CDW that persist up to 100 K. This dynamic CDW fluctuates with a characteristic lifetime of 2 ps at T  =  5 K that decreases to 0.5 ps at T  =  100 K. In contrast, in an optimally doped La[subscript 1.84]Sr[subscript 0.16]CuO[subscript ]4 film (T[subscript c]  =  38.5 K), we detect no signatures of fluctuating CDWs at any temperature, favouring the competition scenario. This work forges a path for studying fluctuating order parameters in various superconductors and other materials.en_US
dc.language.isoen_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/nmat3571en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourcearXiven_US
dc.titleFluctuating charge-density waves in a cuprate superconductoren_US
dc.typeArticleen_US
dc.identifier.citationTorchinsky, Darius H., Fahad Mahmood, Anthony T. Bollinger, Ivan Bozovic, and Nuh Gedik. “Fluctuating Charge-Density Waves in a Cuprate Superconductor.” Nature Materials 12, no. 5 (February 24, 2013): 387–391.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorTorchinsky, Darius H.en_US
dc.contributor.mitauthorMahmood, Fahaden_US
dc.contributor.mitauthorGedik, Nuhen_US
dc.relation.journalNature Materialsen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsTorchinsky, Darius H.; Mahmood, Fahad; Bollinger, Anthony T.; Božović, Ivan; Gedik, Nuhen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-9641-3453
dc.identifier.orcidhttps://orcid.org/0000-0002-6394-4987
mit.licensePUBLISHER_POLICYen_US


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