Challenge of Magnetism in Strongly Correlated Open-Shell 2p Systems

Jürgen Winterlik, Gerhard H. Fecher, Catherine A. Jenkins, Claudia Felser, Claus Mühle, Klaus Doll, Martin Jansen, Leonid M. Sandratskii, and Jürgen Kübler
Phys. Rev. Lett. 102, 016401 – Published 5 January 2009
PDFHTMLExport Citation

Abstract

We report on theoretical investigations of the exotic magnetism in rubidium sesquioxide Rb4O6, a model correlated system with an open 2p shell. Experimental investigations indicated that Rb4O6 is a magnetically frustrated insulator. The frustration is explained here by electronic structure calculations that incorporate the correlation between the oxygen 2p electrons and deal with the mixed-valent oxygen. This leads to a physical picture where the symmetry is reduced because one third of the oxygen in Rb4O6 is nonmagnetic while the remaining two thirds assemble in antiferromagnetic arrangements. A degenerate, insulating ground state with a large number of frustrated noncollinear magnetic configurations is confidently deduced from the theoretical point of view. These findings demonstrate in general the importance of electron-electron correlations in open-shell p-electron systems.

  • Figure
  • Figure
  • Figure
  • Received 11 June 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.016401

©2009 American Physical Society

Authors & Affiliations

Jürgen Winterlik1, Gerhard H. Fecher1, Catherine A. Jenkins1, Claudia Felser1, Claus Mühle2, Klaus Doll2, Martin Jansen2, Leonid M. Sandratskii3, and Jürgen Kübler4

  • 1Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität, D-55099 Mainz, Germany
  • 2Max-Planck-Institute for Solid State Research, 70569 Stuttgart, Germany
  • 3Max-Planck-Institute of Microstructure Physics, 06120 Halle, Germany
  • 4Institute for Solid State Physics, Technische Universität, 64289 Darmstadt, Germany

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 102, Iss. 1 — 9 January 2009

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×