Coexistence of spin-triplet superconductivity with antiferromagnetism in orbitally degenerate system : Hartree-Fock approximation

2012
journal article
article
2
cris.lastimport.wos2024-04-10T02:49:25Z
dc.abstract.enWe consider the coexistence of the Hund's-rule-exchange induced spin-triplet paired state with the antiferromagnetic ordering by starting from the extended Hubbard model for a doubly degenerate band. We use the density of states appropriate for the square lattice and treat the problem in the Hartree-Fock approximation. The temperature dependences of the superconducting gaps, the magnetic moment, and the chemical potential are presented. The free energy in the considered phase is evaluated, as well as the corresponding free energies in four additional phases: paramagnetic, ferromagnetic, superconducting of type A and superconducting of type A1 coexisting with ferromagnetism; They occur in the proper range of parameters: band filling n and the interaction parameters U/W and J/W. The low temperature values of the superconducting gaps and staggered magnetic moment are also analyzed as a function of band filling.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorZegrodnik, M.pl
dc.contributor.authorSpałek, Józef - 132018 pl
dc.date.accessioned2016-05-10T08:32:14Z
dc.date.available2016-05-10T08:32:14Z
dc.date.issued2012pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number4pl
dc.description.physical801-804pl
dc.description.publication0,2pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume121pl
dc.identifier.doi10.12693/APhysPolA.121.801pl
dc.identifier.eissn1898-794Xpl
dc.identifier.issn0587-4246pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/25221
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licenceOTHER
dc.rights.uri*
dc.share.typeotwarte czasopismo
dc.subtypeArticlepl
dc.titleCoexistence of spin-triplet superconductivity with antiferromagnetism in orbitally degenerate system : Hartree-Fock approximationpl
dc.title.journalActa Physica Polonica. Apl
dc.title.volumeProceedings of the XV-th National School "Hundred Years of Superconductivity", Kazimierz Dolny, October 9-13, 2011 and Proceedings of the 9th National Symposium of Synchrotron Radiation Users, Warsaw, September 26-27, 2011 and Selected papers presented at the Tenth Symposium of Magnetic Measurements, Warsaw, September 17-19, 2011pl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T02:49:25Z
dc.abstract.enpl
We consider the coexistence of the Hund's-rule-exchange induced spin-triplet paired state with the antiferromagnetic ordering by starting from the extended Hubbard model for a doubly degenerate band. We use the density of states appropriate for the square lattice and treat the problem in the Hartree-Fock approximation. The temperature dependences of the superconducting gaps, the magnetic moment, and the chemical potential are presented. The free energy in the considered phase is evaluated, as well as the corresponding free energies in four additional phases: paramagnetic, ferromagnetic, superconducting of type A and superconducting of type A1 coexisting with ferromagnetism; They occur in the proper range of parameters: band filling n and the interaction parameters U/W and J/W. The low temperature values of the superconducting gaps and staggered magnetic moment are also analyzed as a function of band filling.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Zegrodnik, M.
dc.contributor.authorpl
Spałek, Józef - 132018
dc.date.accessioned
2016-05-10T08:32:14Z
dc.date.available
2016-05-10T08:32:14Z
dc.date.issuedpl
2012
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.numberpl
4
dc.description.physicalpl
801-804
dc.description.publicationpl
0,2
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
121
dc.identifier.doipl
10.12693/APhysPolA.121.801
dc.identifier.eissnpl
1898-794X
dc.identifier.issnpl
0587-4246
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/25221
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
OTHER
dc.rights.uri*
dc.share.type
otwarte czasopismo
dc.subtypepl
Article
dc.titlepl
Coexistence of spin-triplet superconductivity with antiferromagnetism in orbitally degenerate system : Hartree-Fock approximation
dc.title.journalpl
Acta Physica Polonica. A
dc.title.volumepl
Proceedings of the XV-th National School "Hundred Years of Superconductivity", Kazimierz Dolny, October 9-13, 2011 and Proceedings of the 9th National Symposium of Synchrotron Radiation Users, Warsaw, September 26-27, 2011 and Selected papers presented at the Tenth Symposium of Magnetic Measurements, Warsaw, September 17-19, 2011
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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