Orbitally Induced Peierls State in Spinels

D. I. Khomskii and T. Mizokawa
Phys. Rev. Lett. 94, 156402 – Published 19 April 2005

Abstract

We consider the superstructures, which can be formed in spinels containing on B sites the transition-metal ions with partially filled t2g levels. We show that, when such systems are close to the itinerant state (e.g., have an insulator-metal transition), there may appear in them an orbitally driven Peierls state. We explain by this mechanism the very unusual superstructures observed in CuIr2S4 (octamers) and MgTi2O4 (chiral superstructures) and suggest that a similar phenomenon should be observed in NaTiO2 and possibly in some other systems.

  • Figure
  • Figure
  • Figure
  • Received 17 May 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.156402

©2005 American Physical Society

Authors & Affiliations

D. I. Khomskii1,2 and T. Mizokawa3

  • 1II Physikalisches Institut, Universität zu Köln, 50937 Köln, Germany
  • 2Groningen University, Nijenborgh 4, 9747 AG Groningen, The Netherlands
  • 3Department of Physics and Department of Complexity Science and Engineering, University of Tokyo, 5-1-5 Kashiwanoha, Chiba 277-8581, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 94, Iss. 15 — 22 April 2005

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
×