Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Spin-orbit entangled j=1/2 moments in Ba(2)CWeIrO(6): A frustrated fcc quantum magnet
Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany..
Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany..
Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany..
Univ Cologne, Inst Geol & Mineral, Sect Crystallog, D-50674 Cologne, Germany..
Show others and affiliations
2019 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 100, no 8, article id 085139Article in journal (Refereed) Published
Abstract [en]

We establish the double perovskite Ba2CeIrO6 as a nearly ideal model system for j = 1/2 moments, with resonant inelastic x-ray scattering indicating that the ideal j = 1/2 state contributes by more than 99% to the ground-state wave function. The local j = 1/2 moments form an fcc lattice and are found to order antiferromagnetically at T-N = 14 K, more than an order of magnitude below the Curie-Weiss temperature. Model calculations show that the geometric frustration of the fcc Heisenberg antiferromagnet is further enhanced by a next-nearest neighbor exchange, and a significant size of the latter is indicated by ab initio theory. Our theoretical analysis shows that magnetic order is driven by a bond-directional Kitaev exchange and by local distortions via a strong magnetoelastic effect. Both, the suppression of frustration by Kitaev exchange and the strong magnetoelastic effect are typically not expected for j = 1/2 compounds making Ba2CeIrO6 a riveting example for the rich physics of spin-orbit entangled Mott insulators.

Place, publisher, year, edition, pages
American Physical Society, 2019. Vol. 100, no 8, article id 085139
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-259443DOI: 10.1103/PhysRevB.100.085139ISI: 000482582200006Scopus ID: 2-s2.0-85070093114OAI: oai:DiVA.org:kth-259443DiVA, id: diva2:1353395
Note

QC 20190923

Available from: 2019-09-23 Created: 2019-09-23 Last updated: 2019-10-17Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Hermanns, M.
By organisation
Nordic Institute for Theoretical Physics NORDITA
In the same journal
Physical Review B
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf