Frustration and entanglement in compass and spin-orbital models

2015
journal article
article
15
cris.lastimport.wos2024-04-09T23:13:25Z
dc.abstract.enWe review the consequences of intrinsic frustration of the orbital superexchange and of spin-orbital entanglement. While the Heisenberg perturbing interactions remove frustration in the compass model, the lowest columnar excitations are robust in the nanoscopic compass clusters and might be used for quantum computations. Entangled spin-orbital states determine the ground states in some cases, while in others concern excited states and lead to measurable consequences, as in the RVO_{3} perovskites. On-site entanglement for strong spin-orbit coupling generates the frustrated Kitaev-Heisenberg model with a rich magnetic phase diagram on the honeycomb lattice. Frustration is here reflected in hole propagation which changes from coherent in an antiferromagnet via hidden quasiparticles in zigzag and stripe phases to entirely incoherent one in the Kitaev spin liquid.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorOleś, Andrzej - 100024 pl
dc.date.accessioned2015-07-16T15:06:50Z
dc.date.available2015-07-16T15:06:50Z
dc.date.issued2015pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number2pl
dc.description.physical163-169pl
dc.description.publication0,5pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume127pl
dc.identifier.doi10.12693/APhysPolA.127.163pl
dc.identifier.eissn1898-794Xpl
dc.identifier.issn0587-4246pl
dc.identifier.projectROD UJ / Ppl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/13101
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 4.0 Międzynarodowa*
dc.rights.licenceInna otwarta licencja
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subtypeArticlepl
dc.titleFrustration and entanglement in compass and spin-orbital modelspl
dc.title.journalActa Physica Polonica. Apl
dc.title.volumeProceedings of the European Conference Physics of Magnetism 2014 (PM'14) Poznań, Poland, June 23-27, 2014pl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-09T23:13:25Z
dc.abstract.enpl
We review the consequences of intrinsic frustration of the orbital superexchange and of spin-orbital entanglement. While the Heisenberg perturbing interactions remove frustration in the compass model, the lowest columnar excitations are robust in the nanoscopic compass clusters and might be used for quantum computations. Entangled spin-orbital states determine the ground states in some cases, while in others concern excited states and lead to measurable consequences, as in the RVO_{3} perovskites. On-site entanglement for strong spin-orbit coupling generates the frustrated Kitaev-Heisenberg model with a rich magnetic phase diagram on the honeycomb lattice. Frustration is here reflected in hole propagation which changes from coherent in an antiferromagnet via hidden quasiparticles in zigzag and stripe phases to entirely incoherent one in the Kitaev spin liquid.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Oleś, Andrzej - 100024
dc.date.accessioned
2015-07-16T15:06:50Z
dc.date.available
2015-07-16T15:06:50Z
dc.date.issuedpl
2015
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.numberpl
2
dc.description.physicalpl
163-169
dc.description.publicationpl
0,5
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
127
dc.identifier.doipl
10.12693/APhysPolA.127.163
dc.identifier.eissnpl
1898-794X
dc.identifier.issnpl
0587-4246
dc.identifier.projectpl
ROD UJ / P
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/13101
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 4.0 Międzynarodowa
dc.rights.licence
Inna otwarta licencja
dc.rights.uri*
http://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subtypepl
Article
dc.titlepl
Frustration and entanglement in compass and spin-orbital models
dc.title.journalpl
Acta Physica Polonica. A
dc.title.volumepl
Proceedings of the European Conference Physics of Magnetism 2014 (PM'14) Poznań, Poland, June 23-27, 2014
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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