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Article: The magnon pairing mechanism of superconductivity in cuprate ceramics

TitleThe magnon pairing mechanism of superconductivity in cuprate ceramics
Authors
Issue Date1988
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 1988, v. 239 n. 4842, p. 899-902 How to Cite?
AbstractThe magnon pairing mechanism is derived to explain the high-temperature superconductivity of both the LA2-xSrxCu1O 4 and Y1Ba2Cu3O7 systems. Critical features include (i) a one- or two-dimensional lattice of linear Cu-O-Cu bonds that contribute to large antiferromagnetic (superexchange) coupling of the CuII (d9) orbitals; (ii) holes in the oxygen pπ bands [rather than CuIII (d8)] leading to high mobility hole conduction; and (iii) strong ferromagnetic coupling between oxygen pπ holes and adjacent CuII (d9) electrons. The ferromagnetic coupling of the conduction electrons with copper d spins induces the attractive interaction responsible for the superconductivity, leading to triplet-coupled pairs called "tripgems." The disordered Heisenberg lattice of antiferromagnetically coupled copper d spins serves a role analogous to the phonons in a conventional system. This leads to a maximum transition temperature of about 200 K. For La1.85Sr0.15Cu 1O4, the energy gap is in excellent agreement with experiment. For Y1Ba2Cu3O7, we find that both the CuO sheets and the CuO chains can contribute to the supercurrent.
Persistent Identifierhttp://hdl.handle.net/10722/167478
ISSN
2015 Impact Factor: 34.661
2015 SCImago Journal Rankings: 13.217
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, Gen_US
dc.contributor.authorGoddard Iii, WAen_US
dc.date.accessioned2012-10-08T03:07:30Z-
dc.date.available2012-10-08T03:07:30Z-
dc.date.issued1988en_US
dc.identifier.citationScience, 1988, v. 239 n. 4842, p. 899-902en_US
dc.identifier.issn0036-8075en_US
dc.identifier.urihttp://hdl.handle.net/10722/167478-
dc.description.abstractThe magnon pairing mechanism is derived to explain the high-temperature superconductivity of both the LA2-xSrxCu1O 4 and Y1Ba2Cu3O7 systems. Critical features include (i) a one- or two-dimensional lattice of linear Cu-O-Cu bonds that contribute to large antiferromagnetic (superexchange) coupling of the CuII (d9) orbitals; (ii) holes in the oxygen pπ bands [rather than CuIII (d8)] leading to high mobility hole conduction; and (iii) strong ferromagnetic coupling between oxygen pπ holes and adjacent CuII (d9) electrons. The ferromagnetic coupling of the conduction electrons with copper d spins induces the attractive interaction responsible for the superconductivity, leading to triplet-coupled pairs called "tripgems." The disordered Heisenberg lattice of antiferromagnetically coupled copper d spins serves a role analogous to the phonons in a conventional system. This leads to a maximum transition temperature of about 200 K. For La1.85Sr0.15Cu 1O4, the energy gap is in excellent agreement with experiment. For Y1Ba2Cu3O7, we find that both the CuO sheets and the CuO chains can contribute to the supercurrent.en_US
dc.languageengen_US
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.orgen_US
dc.relation.ispartofScienceen_US
dc.titleThe magnon pairing mechanism of superconductivity in cuprate ceramicsen_US
dc.typeArticleen_US
dc.identifier.emailChen, G:ghc@yangtze.hku.hken_US
dc.identifier.authorityChen, G=rp00671en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1126/science.239.4842.899-
dc.identifier.pmid17759036-
dc.identifier.scopuseid_2-s2.0-0023965244en_US
dc.identifier.volume239en_US
dc.identifier.issue4842en_US
dc.identifier.spage899en_US
dc.identifier.epage902en_US
dc.identifier.isiWOS:A1988M118300029-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChen, G=35253368600en_US
dc.identifier.scopusauthoridGoddard III, WA=36042196400en_US

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