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Klauss HH, Luetkens H, Klingeler R, et al. Commensurate spin density wave in LaFeAsO: a local probe study. Phys Rev Lett. 2008;101(7):077005doi: 10.1103/PhysRevLett.101.077005.
Klauss, H. H., Luetkens, H., Klingeler, R., Hess, C., Litterst, F. J., Kraken, M., Korshunov, M. M., Eremin, I., Drechsler, S. L., Khasanov, R., Amato, A., Hamann-Borrero, J., Leps, N., Kondrat, A., Behr, G., Werner, J., & Büchner, B. (2008). Commensurate spin density wave in LaFeAsO: a local probe study. Physical review letters, 101(7), 077005. https://doi.org/10.1103/PhysRevLett.101.077005
Klauss, H-H, et al. "Commensurate spin density wave in LaFeAsO: a local probe study." Physical review letters vol. 101,7 (2008): 077005. doi: https://doi.org/10.1103/PhysRevLett.101.077005
Klauss HH, Luetkens H, Klingeler R, Hess C, Litterst FJ, Kraken M, Korshunov MM, Eremin I, Drechsler SL, Khasanov R, Amato A, Hamann-Borrero J, Leps N, Kondrat A, Behr G, Werner J, Büchner B. Commensurate spin density wave in LaFeAsO: a local probe study. Phys Rev Lett. 2008 Aug 15;101(7):077005. doi: 10.1103/PhysRevLett.101.077005. Epub 2008 Aug 14. PMID: 18764570.
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Phys Rev Lett. 2008 Aug 15;101(7):077005. doi: 10.1103/PhysRevLett.101.077005. Epub 2008 Aug 14.

Commensurate spin density wave in LaFeAsO: a local probe study.

Physical review letters

H-H Klauss, H Luetkens, R Klingeler, C Hess, F J Litterst, M Kraken, M M Korshunov, I Eremin, S-L Drechsler, R Khasanov, A Amato, J Hamann-Borrero, N Leps, A Kondrat, G Behr, J Werner, B Büchner

Affiliations

  1. Institut für Festkörperphysik, TU Dresden, D-01069 Dresden, Germany. [email protected]

PMID: 18764570 DOI: 10.1103/PhysRevLett.101.077005

Abstract

We present a detailed study on the magnetic order in the undoped mother compound LaFeAsO of the recently discovered Fe-based superconductor LaFeAsO1-xFx. In particular, we present local probe measurements of the magnetic properties of LaFeAsO by means of 57Fe Mössbauer spectroscopy and muon-spin relaxation in zero external field along with magnetization and resistivity studies. These experiments prove a commensurate static magnetic order with a strongly reduced ordered moment of 0.25(5)muB at the iron site below T(N)=138 K, well separated from a structural phase transition at T(S)=156 K. The temperature dependence of the sublattice magnetization is determined and compared to theory. Using a four-band spin density wave model both, the size of the order parameter and the quick saturation below T(N) are reproduced.

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