Noncollinear magnetic order stabilized by entangled spin-orbital fluctuations

2012
journal article
article
40
dc.abstract.enQuantum phase transitions in the two-dimensional Kugel-Khomskii model on a square lattice are studied using the plaquette mean field theory and the entanglement renormalization Ansatz. When 3z^{2}−r^{2} orbitals are favored by the crystal field and Hund’s exchange is finite, both methods give a noncollinear exotic magnetic order that consists of four sublattices with mutually orthogonal nearest-neighbor and antiferromagnetic second-neighbor spins. We derive an effective frustrated spin model with second- and third-neighbor spin interactions which stabilize this phase and follow from spin-orbital quantum fluctuations involving spin singlets entangled with orbital excitations.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorBrzezicki, Wojciech - 114048 pl
dc.contributor.authorDziarmaga, Jacek - 127850 pl
dc.contributor.authorOleś, Andrzej - 100024 pl
dc.date.accessioned2016-05-11T18:52:00Z
dc.date.available2016-05-11T18:52:00Z
dc.date.issued2012pl
dc.description.number23pl
dc.description.publication0,3pl
dc.description.volume109pl
dc.identifier.articleid237201pl
dc.identifier.doi10.1103/PhysRevLett.109.237201pl
dc.identifier.eissn1079-7114pl
dc.identifier.eissn1092-0145pl
dc.identifier.issn0031-9007pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/25538
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licencebez licencji
dc.rights.uri*
dc.subtypeArticlepl
dc.titleNoncollinear magnetic order stabilized by entangled spin-orbital fluctuationspl
dc.title.journalPhysical Review Letterspl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
Quantum phase transitions in the two-dimensional Kugel-Khomskii model on a square lattice are studied using the plaquette mean field theory and the entanglement renormalization Ansatz. When 3z^{2}−r^{2} orbitals are favored by the crystal field and Hund’s exchange is finite, both methods give a noncollinear exotic magnetic order that consists of four sublattices with mutually orthogonal nearest-neighbor and antiferromagnetic second-neighbor spins. We derive an effective frustrated spin model with second- and third-neighbor spin interactions which stabilize this phase and follow from spin-orbital quantum fluctuations involving spin singlets entangled with orbital excitations.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Brzezicki, Wojciech - 114048
dc.contributor.authorpl
Dziarmaga, Jacek - 127850
dc.contributor.authorpl
Oleś, Andrzej - 100024
dc.date.accessioned
2016-05-11T18:52:00Z
dc.date.available
2016-05-11T18:52:00Z
dc.date.issuedpl
2012
dc.description.numberpl
23
dc.description.publicationpl
0,3
dc.description.volumepl
109
dc.identifier.articleidpl
237201
dc.identifier.doipl
10.1103/PhysRevLett.109.237201
dc.identifier.eissnpl
1079-7114
dc.identifier.eissnpl
1092-0145
dc.identifier.issnpl
0031-9007
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/25538
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
bez licencji
dc.rights.uri*
dc.subtypepl
Article
dc.titlepl
Noncollinear magnetic order stabilized by entangled spin-orbital fluctuations
dc.title.journalpl
Physical Review Letters
dc.typepl
JournalArticle
dspace.entity.type
Publication

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