DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kohsaka, Y. | ko |
dc.contributor.author | Taylor, C. | ko |
dc.contributor.author | Wahl, P. | ko |
dc.contributor.author | Schmidt, A. | ko |
dc.contributor.author | Lee, Jhinhwan | ko |
dc.contributor.author | Fujita, K. | ko |
dc.contributor.author | Alldredge, J. W. | ko |
dc.contributor.author | McElroy, K. | ko |
dc.contributor.author | Lee, Jinho | ko |
dc.contributor.author | Eisaki, H. | ko |
dc.contributor.author | Uchida, S. | ko |
dc.contributor.author | Lee, D. -H. | ko |
dc.contributor.author | Davis, J. C. | ko |
dc.date.accessioned | 2013-03-06T20:05:19Z | - |
dc.date.available | 2013-03-06T20:05:19Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2008-08 | - |
dc.identifier.citation | NATURE, v.454, no.7208, pp.1072 - 1078 | - |
dc.identifier.issn | 0028-0836 | - |
dc.identifier.uri | http://hdl.handle.net/10203/88273 | - |
dc.description.abstract | The antiferromagnetic ground state of copper oxide Mott insulators is achieved by localizing an electron at each copper atom in real space (r-space). Removing a small fraction of these electrons ( hole doping) transforms this system into a superconducting fluid of delocalized Cooper pairs in momentum space ( k- space). During this transformation, two distinctive classes of electronic excitations appear. At high energies, the mysterious 'pseudogap' excitations are found, whereas, at lower energies, Bogoliubov quasi- particles - the excitations resulting from the breaking of Cooper pairs should exist. To explore this transformation, and to identify the two excitation types, we have imaged the electronic structure of Bi(2)Sr(2)CaCu(2)O(8+delta) in r- space and k- space simultaneously. We find that although the low- energy excitations are indeed Bogoliubov quasi- particles, they occupy only a restricted region of k- space that shrinks rapidly with diminishing hole density. Concomitantly, spectral weight is transferred to higher energy r- space states that lack the characteristics of excitations from delocalized Cooper pairs. Instead, these states break translational and rotational symmetries locally at the atomic scale in an energy- independent way. We demonstrate that these unusual r- space excitations are, in fact, the pseudogap states. Thus, as the Mott insulating state is approached by decreasing the hole density, the delocalized Cooper pairs vanish from k- space, to be replaced by locally translational- and rotational- symmetry- breaking pseudogap states in r- space. | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.subject | HIGH-TEMPERATURE SUPERCONDUCTORS | - |
dc.subject | QUASI-PARTICLES | - |
dc.subject | PHYSICS | - |
dc.subject | CA2-XNAXCUO2CL2 | - |
dc.subject | PSEUDOGAP | - |
dc.subject | EVOLUTION | - |
dc.title | How cooper pairs vanish approaching the Mott insulator in Bi(2)Sr(2)CaCu(2)O(8+delta) | - |
dc.type | Article | - |
dc.identifier.wosid | 000258719600028 | - |
dc.identifier.scopusid | 2-s2.0-50649124272 | - |
dc.type.rims | ART | - |
dc.citation.volume | 454 | - |
dc.citation.issue | 7208 | - |
dc.citation.beginningpage | 1072 | - |
dc.citation.endingpage | 1078 | - |
dc.citation.publicationname | NATURE | - |
dc.identifier.doi | 10.1038/nature07243 | - |
dc.contributor.localauthor | Lee, Jhinhwan | - |
dc.contributor.nonIdAuthor | Kohsaka, Y. | - |
dc.contributor.nonIdAuthor | Taylor, C. | - |
dc.contributor.nonIdAuthor | Wahl, P. | - |
dc.contributor.nonIdAuthor | Schmidt, A. | - |
dc.contributor.nonIdAuthor | Fujita, K. | - |
dc.contributor.nonIdAuthor | Alldredge, J. W. | - |
dc.contributor.nonIdAuthor | McElroy, K. | - |
dc.contributor.nonIdAuthor | Lee, Jinho | - |
dc.contributor.nonIdAuthor | Eisaki, H. | - |
dc.contributor.nonIdAuthor | Uchida, S. | - |
dc.contributor.nonIdAuthor | Lee, D. -H. | - |
dc.contributor.nonIdAuthor | Davis, J. C. | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | HIGH-TEMPERATURE SUPERCONDUCTORS | - |
dc.subject.keywordPlus | QUASI-PARTICLES | - |
dc.subject.keywordPlus | PHYSICS | - |
dc.subject.keywordPlus | CA2-XNAXCUO2CL2 | - |
dc.subject.keywordPlus | PSEUDOGAP | - |
dc.subject.keywordPlus | EVOLUTION | - |
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