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d-wave superconductivity and its coexistence with antiferromagnetism in the t–J–U model : statistically consistent Gutzwiller approach

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d-wave superconductivity and its coexistence with antiferromagnetism in the t–J–U model : statistically consistent Gutzwiller approach

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dc.contributor.author Abram, Marcin [USOS61755] pl
dc.contributor.author Kaczmarczyk, Jan [SAP13036534] pl
dc.contributor.author Jędrak, Jakub pl
dc.contributor.author Spałek, Józef [SAP11015561] pl
dc.date.accessioned 2015-06-26T09:05:48Z
dc.date.available 2015-06-26T09:05:48Z
dc.date.issued 2013 pl
dc.identifier.issn 1098-0121 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/10447
dc.language eng pl
dc.rights Dodaję tylko opis bibliograficzny *
dc.rights.uri *
dc.title d-wave superconductivity and its coexistence with antiferromagnetism in the t–J–U model : statistically consistent Gutzwiller approach pl
dc.type JournalArticle pl
dc.abstract.en We discuss the coexistence of antiferromagnetism and d-wave superconductivity within the so-called statistically consistent Gutzwiller approximation (SGA) applied to the t–J–U model. In this approach, the averages calculated in a self-consistent manner coincide with those determined variationally. Such consistency is not guaranteed within the standard renormalized mean-field theory. With the help of SGA, we show that for the typical value $J/\left | t \right |=\frac{1}{3}$, coexistence of antiferromagnetism (AF) and superconductivity (SC) appears only for $U/\left | t \right |> 10.6$ and in a very narrow range of doping $\left ( \delta _{\sim }^{<} 0.006 \right )$ in the vicinity of the Mott insulating state, in contrast to some previous reports. In the coexistent AF+SC phase, a staggered spin-triplet component of the superconducting gap appears also naturally; its value is very small. pl
dc.description.volume 88 pl
dc.description.number 9 pl
dc.description.publication 1 pl
dc.identifier.doi 10.1103/PhysRevB.88.094502 pl
dc.identifier.eissn 1550-235X pl
dc.identifier.eissn 1538-4489 pl
dc.title.journal Physical Review. B, Condensed Matter and Materials Physics pl
dc.language.container eng pl
dc.affiliation Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego pl
dc.subtype Article pl
dc.identifier.articleid 094502 pl
dc.rights.original bez licencji pl
.pointsMNiSW [2013 A]: 35


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