| Conţinutul numărului revistei |
| Articolul precedent |
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 130 0 |
 SM ISO690:2012TEMPERE, Jacques, FOMIN, Vladimir, DEVREESE, Josef T.. Bipolaron dispersion in anisotropic high-tc superconductors: Relevance to neutron scattering. In: Solid State Communications, 1997, vol. 101, pp. 661-664. ISSN 0038-1098. DOI: https://doi.org/10.1016/S0038-1098(88)80000-0 |
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  Solid State Communications |
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| Volumul 101 / 1997 / ISSN 0038-1098 /ISSNe 1879-2766 | ||||||
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| DOI:https://doi.org/10.1016/S0038-1098(88)80000-0 | ||||||
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Neutron scattering experiments on superconducting YBa2Cu3O6+x reveal that the scattering vanishes for energy transfers above approximately 50 meV. In order to examine Alexandrov's suggestion [1] that the disappearance of magnetic scattering is due to the narrowness of the bipolaron band, we present a variational method which can be used to investigate the bipolaron energy dispersion in anisotropic materials. The method is then applied to a model of bipolarons in YBa2Cu3O7 and a value for the bipolaron energy bandwidth is found compatible with that derived from neutron scattering experiments. |
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| Cuvinte-cheie A. High-Tc, D. Electron-phonon interactions, D. Electronic band structure, E. Neutron scattering, superconductors |
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Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Tempere, J.</dc:creator> <dc:creator>Fomin, V.M.</dc:creator> <dc:creator>Devreese, J.</dc:creator> <dc:date>1997-03-01</dc:date> <dc:description xml:lang='en'><p>Neutron scattering experiments on superconducting YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6+x</sub> reveal that the scattering vanishes for energy transfers above approximately 50 meV. In order to examine Alexandrov's suggestion [1] that the disappearance of magnetic scattering is due to the narrowness of the bipolaron band, we present a variational method which can be used to investigate the bipolaron energy dispersion in anisotropic materials. The method is then applied to a model of bipolarons in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> and a value for the bipolaron energy bandwidth is found compatible with that derived from neutron scattering experiments. </p></dc:description> <dc:identifier>10.1016/S0038-1098(88)80000-0</dc:identifier> <dc:source>Solid State Communications () 661-664</dc:source> <dc:subject>A. High-Tc</dc:subject> <dc:subject>D. Electron-phonon interactions</dc:subject> <dc:subject>D. Electronic band structure</dc:subject> <dc:subject>E. Neutron scattering</dc:subject> <dc:subject>superconductors</dc:subject> <dc:title>Bipolaron dispersion in anisotropic high-tc superconductors: Relevance to neutron scattering</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
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