Anisotropic CE-type orbital correlations in the ferromagnetic metallic phase of Nd1/2Sr1/2MnO3

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • J. Geck - , RWTH Aachen University (Author)
  • D. Bruns - , RWTH Aachen University (Author)
  • C. Hess - , RWTH Aachen University (Author)
  • R. Klingeler - , RWTH Aachen University (Author)
  • P. Reutler - , RWTH Aachen University (Author)
  • M. Zimmermann - , German Electron Synchrotron (DESY) (Author)
  • S. W. Cheong - , Rutgers - The State University of New Jersey, New Brunswick (Author)
  • B. Büchner - , RWTH Aachen University (Author)

Abstract

We present hard x-ray scattering studies of the charge and orbital ordering in (formula presented) together with magnetization and thermal expansion measurements as a function of temperature and magnetic field. Superstructure reflections corresponding to the orbital ordering below (formula presented) are observed in the ferromagnetic metallic phase up to 200 K. The correlation length of the observed structural modulations is found to be highly anisotropic; i.e., the correlations exist predominantly in the (formula presented) planes. Moreover, the periodicity of the superstructure modulations is the same above and below (formula presented) As a consequence, the modulations found in the ferromagnetic metallic phase are incommensurate to the average lattice structure. The results from hard x-ray scattering, thermal expansion, and magnetization studies can be consistently interpreted in terms of short-range orbital ordering in the ferromagnetic metallic phase of (formula presented).

Details

Original languageEnglish
Article number184407
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number18
Publication statusPublished - 2002
Peer-reviewedYes
Externally publishedYes

External IDs

ORCID /0000-0002-2438-0672/work/158767799