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HUGE MAGNETOVOLUME EFFECT IN AN INVERTED MnLAYER ON Ag(001) STUDIED BY LEED

Author

Listed:
  • P. SCHIEFFER

    (Laboratoire de Physique et de Spectroscopie Electronique (UMR CNRS 7014), Faculté des Sciences et Techniques, 4 rue des Frères Lumière, F-68093 Mulhouse Cedex, France)

  • C. KREMBEL

    (Laboratoire de Physique et de Spectroscopie Electronique (UMR CNRS 7014), Faculté des Sciences et Techniques, 4 rue des Frères Lumière, F-68093 Mulhouse Cedex, France)

  • M.-C. HANF

    (Laboratoire de Physique et de Spectroscopie Electronique (UMR CNRS 7014), Faculté des Sciences et Techniques, 4 rue des Frères Lumière, F-68093 Mulhouse Cedex, France)

  • G. GEWINNER

    (Laboratoire de Physique et de Spectroscopie Electronique (UMR CNRS 7014), Faculté des Sciences et Techniques, 4 rue des Frères Lumière, F-68093 Mulhouse Cedex, France)

  • Y. GAUTHIER

    (Laboratoire de Cristallographie, CNRS, Boite Postale 166, F-38042 Grenoble Cedex, France)

Abstract

The surface structure obtained by deposition of a Ag monolayer on the ideal c(2 × 2) antiferromagnetic Mn monolayer on Ag(001) at 100 K and subsequent annealing at room temperature is determined by low energy electron diffraction. It is established that this system is actually a good realization of an inverted monolayer, i.e. a pseudomorphic Ag/Mn/Ag(001) structure that corresponds to a reversed composition of the two topmost layers with respect to the Mn overlayer. The Ag–Mn and Mn–Ag interlayer distances,d12= 1.97 ± 0.015Å andd23= 1.97 ± 0.02Å respectively, indicate only a fairly small contraction of ~ 3.5% (~ 1.5%) with respect to the ideal Ag bulk lattice (Mn monolayer on top) as compared to ~ 10% expected from atomic radii in bulk Mn and Ag. This clearly reveals a spectacular magnetovolume effect related to the high spin state of Mn in this two-dimensional structure.

Suggested Citation

  • P. Schieffer & C. Krembel & M.-C. Hanf & G. Gewinner & Y. Gauthier, 2002. "HUGE MAGNETOVOLUME EFFECT IN AN INVERTED MnLAYER ON Ag(001) STUDIED BY LEED," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 9(03n04), pages 1431-1436.
    • Handle: RePEc:wsi:srlxxx:v:09:y:2002:i:03n04:n:s0218625x02004013
    DOI: 10.1142/S0218625X02004013
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