dc.contributor.author
Buessen, Finn Lasse
dc.contributor.author
Hering, Max
dc.contributor.author
Reuther, Johannes
dc.contributor.author
Trebst, Simon
dc.date.accessioned
2019-03-07T12:21:54Z
dc.date.available
2019-03-07T12:21:54Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/24095
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-1869
dc.description.abstract
Motivated by the recent synthesis of the spin-1 A-site spinel NiRh2O4, we investigate the classical to quantum crossover of a frustrated J1−J2 Heisenberg model on the diamond lattice upon varying the spin length S. Applying a recently developed pseudospin functional renormalization group approach for arbitrary spin-S magnets, we find that systems with S≥3/2 reside in the classical regime, where the low-temperature physics is dominated by the formation of coplanar spirals and a thermal (order-by-disorder) transition. For smaller local moments S=1 or S=1/2, we find that the system evades a thermal ordering transition and forms a quantum spiral spin liquid where the fluctuations are restricted to characteristic momentum-space surfaces. For the tetragonal phase of NiRh2O4, a modified J1−J−2−J⊥2 exchange model is found to favor a conventionally ordered Néel state (for arbitrary spin S), even in the presence of a strong local single-ion spin anisotropy, and it requires additional sources of frustration to explain the experimentally observed absence of a thermal ordering transition.
en
dc.format.extent
6 Seiten
dc.subject
Quantum spin liquid
en
dc.subject
Strongly correlated systems
en
dc.subject
Functional renormalization group
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Quantum Spin Liquids in Frustrated Spin-1 Diamond Antiferromagnets
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
057201
dcterms.bibliographicCitation.doi
10.1103/PhysRevLett.120.057201
dcterms.bibliographicCitation.journaltitle
Physical Review Letters
dcterms.bibliographicCitation.number
5
dcterms.bibliographicCitation.volume
120
dcterms.bibliographicCitation.url
https://doi.org/10.1103/PhysRevLett.120.057201
dcterms.rightsHolder.note
Copyright des Verlags
dcterms.rightsHolder.url
https://journals.aps.org/copyrightFAQ.html#post
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
refubium.isSupplementedBy
1079-7114 (Online)
dcterms.isPartOf.issn
0031-9007 (Print)
dcterms.isPartOf.issn
1079-7114 (Online)